Pileus Git - ~andy/gtk/blob - gtk/gtkcombobox.c

   1 /* gtkcombobox.c
   2  * Copyright (C) 2002, 2003  Kristian Rietveld <kris@gtk.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21 #include "gtkcombobox.h"
  22 #include "gtkcellareabox.h"
  23 #include "gtktreemenu.h"
  24 #include "gtkarrow.h"
  25 #include "gtkbindings.h"
  26 #include "gtkcelllayout.h"
  27 #include "gtkcellrenderertext.h"
  28 #include "gtkcellview.h"
  29 #include "gtkeventbox.h"
  30 #include "gtkframe.h"
  31 #include "gtkbox.h"
  32 #include "gtkliststore.h"
  33 #include "gtkmain.h"
  34 #include "gtkmenuprivate.h"
  35 #include "gtkmenushellprivate.h"
  36 #include "gtkscrolledwindow.h"
  37 #include "gtkseparatormenuitem.h"
  38 #include "deprecated/gtktearoffmenuitem.h"
  39 #include "gtktogglebutton.h"
  40 #include "gtktreeselection.h"
  41 #include "gtkseparator.h"
  42 #include "gtkwindow.h"
  43 #include "gtktypebuiltins.h"
  44 #include "gtkprivate.h"
  45
  46 #include <gobject/gvaluecollector.h>
  47
  48 #include <string.h>
  49 #include <stdarg.h>
  50
  51 #include "gtkmarshalers.h"
  52 #include "gtkintl.h"
  53
  54 #include "gtkentryprivate.h"
  55 #include "gtktreeprivate.h"
  56 #include "a11y/gtkcomboboxaccessible.h"
  57
  58
  59 /**
  60  * SECTION:gtkcombobox
  61  * @Short_description: A widget used to choose from a list of items
  62  * @Title: GtkComboBox
  63  * @See_also: #GtkComboBoxText, #GtkTreeModel, #GtkCellRenderer
  64  *
  65  * A GtkComboBox is a widget that allows the user to choose from a list of
  66  * valid choices. The GtkComboBox displays the selected choice. When
  67  * activated, the GtkComboBox displays a popup which allows the user to
  68  * make a new choice. The style in which the selected value is displayed,
  69  * and the style of the popup is determined by the current theme. It may
  70  * be similar to a Windows-style combo box.
  71  *
  72  * The GtkComboBox uses the model-view pattern; the list of valid choices
  73  * is specified in the form of a tree model, and the display of the choices
  74  * can be adapted to the data in the model by using cell renderers, as you
  75  * would in a tree view. This is possible since GtkComboBox implements the
  76  * #GtkCellLayout interface. The tree model holding the valid choices is
  77  * not restricted to a flat list, it can be a real tree, and the popup will
  78  * reflect the tree structure.
  79  *
  80  * To allow the user to enter values not in the model, the 'has-entry'
  81  * property allows the GtkComboBox to contain a #GtkEntry. This entry
  82  * can be accessed by calling gtk_bin_get_child() on the combo box.
  83  *
  84  * For a simple list of textual choices, the model-view API of GtkComboBox
  85  * can be a bit overwhelming. In this case, #GtkComboBoxText offers a
  86  * simple alternative. Both GtkComboBox and #GtkComboBoxText can contain
  87  * an entry.
  88  */
  89
  90
  91 /* WELCOME, to THE house of evil code */
  92 struct _GtkComboBoxPrivate
  93 {
  94   GtkTreeModel *model;
  95
  96   GtkCellArea *area;
  97
  98   gint col_column;
  99   gint row_column;
 100
 101   gint wrap_width;
 102   GtkShadowType shadow_type;
 103
 104   gint active; /* Only temporary */
 105   GtkTreeRowReference *active_row;
 106
 107   GtkWidget *tree_view;
 108
 109   GtkWidget *cell_view;
 110   GtkWidget *cell_view_frame;
 111
 112   GtkWidget *button;
 113   GtkWidget *box;
 114   GtkWidget *arrow;
 115   GtkWidget *separator;
 116
 117   GtkWidget *popup_widget;
 118   GtkWidget *popup_window;
 119   GtkWidget *scrolled_window;
 120
 121   gulong inserted_id;
 122   gulong deleted_id;
 123   gulong reordered_id;
 124   gulong changed_id;
 125   guint popup_idle_id;
 126   guint activate_button;
 127   guint32 activate_time;
 128   guint scroll_timer;
 129   guint resize_idle_id;
 130
 131   /* For "has-entry" specific behavior we track
 132    * an automated cell renderer and text column
 133    */
 134   gint  text_column;
 135   GtkCellRenderer *text_renderer;
 136
 137   gint id_column;
 138
 139   guint popup_in_progress : 1;
 140   guint popup_shown : 1;
 141   guint add_tearoffs : 1;
 142   guint has_frame : 1;
 143   guint is_cell_renderer : 1;
 144   guint editing_canceled : 1;
 145   guint auto_scroll : 1;
 146   guint focus_on_click : 1;
 147   guint button_sensitivity : 2;
 148   guint has_entry : 1;
 149   guint popup_fixed_width : 1;
 150
 151   GtkTreeViewRowSeparatorFunc row_separator_func;
 152   gpointer                    row_separator_data;
 153   GDestroyNotify              row_separator_destroy;
 154
 155   GdkDevice *grab_pointer;
 156   GdkDevice *grab_keyboard;
 157
 158   gchar *tearoff_title;
 159 };
 160
 161 /* While debugging this evil code, I have learned that
 162  * there are actually 4 modes to this widget, which can
 163  * be characterized as follows
 164  *
 165  * 1) menu mode, no child added
 166  *
 167  * tree_view -> NULL
 168  * cell_view -> GtkCellView, regular child
 169  * cell_view_frame -> NULL
 170  * button -> GtkToggleButton set_parent to combo
 171  * arrow -> GtkArrow set_parent to button
 172  * separator -> GtkVSepator set_parent to button
 173  * popup_widget -> GtkMenu
 174  * popup_window -> NULL
 175  * scrolled_window -> NULL
 176  *
 177  * 2) menu mode, child added
 178  *
 179  * tree_view -> NULL
 180  * cell_view -> NULL
 181  * cell_view_frame -> NULL
 182  * button -> GtkToggleButton set_parent to combo
 183  * arrow -> GtkArrow, child of button
 184  * separator -> NULL
 185  * popup_widget -> GtkMenu
 186  * popup_window -> NULL
 187  * scrolled_window -> NULL
 188  *
 189  * 3) list mode, no child added
 190  *
 191  * tree_view -> GtkTreeView, child of scrolled_window
 192  * cell_view -> GtkCellView, regular child
 193  * cell_view_frame -> GtkFrame, set parent to combo
 194  * button -> GtkToggleButton, set_parent to combo
 195  * arrow -> GtkArrow, child of button
 196  * separator -> NULL
 197  * popup_widget -> tree_view
 198  * popup_window -> GtkWindow
 199  * scrolled_window -> GtkScrolledWindow, child of popup_window
 200  *
 201  * 4) list mode, child added
 202  *
 203  * tree_view -> GtkTreeView, child of scrolled_window
 204  * cell_view -> NULL
 205  * cell_view_frame -> NULL
 206  * button -> GtkToggleButton, set_parent to combo
 207  * arrow -> GtkArrow, child of button
 208  * separator -> NULL
 209  * popup_widget -> tree_view
 210  * popup_window -> GtkWindow
 211  * scrolled_window -> GtkScrolledWindow, child of popup_window
 212  *
 213  */
 214
 215 enum {
 216   CHANGED,
 217   MOVE_ACTIVE,
 218   POPUP,
 219   POPDOWN,
 220   FORMAT_ENTRY_TEXT,
 221   LAST_SIGNAL
 222 };
 223
 224 enum {
 225   PROP_0,
 226   PROP_MODEL,
 227   PROP_WRAP_WIDTH,
 228   PROP_ROW_SPAN_COLUMN,
 229   PROP_COLUMN_SPAN_COLUMN,
 230   PROP_ACTIVE,
 231   PROP_ADD_TEAROFFS,
 232   PROP_TEAROFF_TITLE,
 233   PROP_HAS_FRAME,
 234   PROP_FOCUS_ON_CLICK,
 235   PROP_POPUP_SHOWN,
 236   PROP_BUTTON_SENSITIVITY,
 237   PROP_EDITING_CANCELED,
 238   PROP_HAS_ENTRY,
 239   PROP_ENTRY_TEXT_COLUMN,
 240   PROP_POPUP_FIXED_WIDTH,
 241   PROP_ID_COLUMN,
 242   PROP_ACTIVE_ID,
 243   PROP_CELL_AREA
 244 };
 245
 246 static guint combo_box_signals[LAST_SIGNAL] = {0,};
 247
 248 #define SCROLL_TIME  100
 249
 250 /* common */
 251
 252 static void     gtk_combo_box_cell_layout_init     (GtkCellLayoutIface *iface);
 253 static void     gtk_combo_box_cell_editable_init   (GtkCellEditableIface *iface);
 254 static GObject *gtk_combo_box_constructor          (GType                  type,
 255                                                     guint                  n_construct_properties,
 256                                                     GObjectConstructParam *construct_properties);
 257 static void     gtk_combo_box_dispose              (GObject          *object);
 258 static void     gtk_combo_box_finalize             (GObject          *object);
 259 static void     gtk_combo_box_destroy              (GtkWidget        *widget);
 260
 261 static void     gtk_combo_box_set_property         (GObject         *object,
 262                                                     guint            prop_id,
 263                                                     const GValue    *value,
 264                                                     GParamSpec      *spec);
 265 static void     gtk_combo_box_get_property         (GObject         *object,
 266                                                     guint            prop_id,
 267                                                     GValue          *value,
 268                                                     GParamSpec      *spec);
 269
 270 static void     gtk_combo_box_state_flags_changed  (GtkWidget       *widget,
 271                                                     GtkStateFlags    previous);
 272 static void     gtk_combo_box_grab_focus           (GtkWidget       *widget);
 273 static void     gtk_combo_box_style_updated        (GtkWidget       *widget);
 274 static void     gtk_combo_box_button_toggled       (GtkWidget       *widget,
 275                                                     gpointer         data);
 276 static void     gtk_combo_box_button_state_flags_changed (GtkWidget     *widget,
 277                                                           GtkStateFlags  previous,
 278                                                           gpointer       data);
 279 static void     gtk_combo_box_add                  (GtkContainer    *container,
 280                                                     GtkWidget       *widget);
 281 static void     gtk_combo_box_remove               (GtkContainer    *container,
 282                                                     GtkWidget       *widget);
 283
 284 static void     gtk_combo_box_menu_show            (GtkWidget        *menu,
 285                                                     gpointer          user_data);
 286 static void     gtk_combo_box_menu_hide            (GtkWidget        *menu,
 287                                                     gpointer          user_data);
 288
 289 static void     gtk_combo_box_set_popup_widget     (GtkComboBox      *combo_box,
 290                                                     GtkWidget        *popup);
 291 static void     gtk_combo_box_menu_position_below  (GtkMenu          *menu,
 292                                                     gint             *x,
 293                                                     gint             *y,
 294                                                     gint             *push_in,
 295                                                     gpointer          user_data);
 296 static void     gtk_combo_box_menu_position_over   (GtkMenu          *menu,
 297                                                     gint             *x,
 298                                                     gint             *y,
 299                                                     gint             *push_in,
 300                                                     gpointer          user_data);
 301 static void     gtk_combo_box_menu_position        (GtkMenu          *menu,
 302                                                     gint             *x,
 303                                                     gint             *y,
 304                                                     gint             *push_in,
 305                                                     gpointer          user_data);
 306
 307 static void     gtk_combo_box_unset_model          (GtkComboBox      *combo_box);
 308
 309 static void     gtk_combo_box_size_allocate        (GtkWidget        *widget,
 310                                                     GtkAllocation    *allocation);
 311 static void     gtk_combo_box_forall               (GtkContainer     *container,
 312                                                     gboolean          include_internals,
 313                                                     GtkCallback       callback,
 314                                                     gpointer          callback_data);
 315 static gboolean gtk_combo_box_draw                 (GtkWidget        *widget,
 316                                                     cairo_t          *cr);
 317 static gboolean gtk_combo_box_scroll_event         (GtkWidget        *widget,
 318                                                     GdkEventScroll   *event);
 319 static void     gtk_combo_box_set_active_internal  (GtkComboBox      *combo_box,
 320                                                     GtkTreePath      *path);
 321
 322 static void     gtk_combo_box_check_appearance     (GtkComboBox      *combo_box);
 323 static void     gtk_combo_box_real_move_active     (GtkComboBox      *combo_box,
 324                                                     GtkScrollType     scroll);
 325 static void     gtk_combo_box_real_popup           (GtkComboBox      *combo_box);
 326 static gboolean gtk_combo_box_real_popdown         (GtkComboBox      *combo_box);
 327
 328 /* listening to the model */
 329 static void     gtk_combo_box_model_row_inserted   (GtkTreeModel     *model,
 330                                                     GtkTreePath      *path,
 331                                                     GtkTreeIter      *iter,
 332                                                     gpointer          user_data);
 333 static void     gtk_combo_box_model_row_deleted    (GtkTreeModel     *model,
 334                                                     GtkTreePath      *path,
 335                                                     gpointer          user_data);
 336 static void     gtk_combo_box_model_rows_reordered (GtkTreeModel     *model,
 337                                                     GtkTreePath      *path,
 338                                                     GtkTreeIter      *iter,
 339                                                     gint             *new_order,
 340                                                     gpointer          user_data);
 341 static void     gtk_combo_box_model_row_changed    (GtkTreeModel     *model,
 342                                                     GtkTreePath      *path,
 343                                                     GtkTreeIter      *iter,
 344                                                     gpointer          data);
 345 static void     gtk_combo_box_model_row_expanded   (GtkTreeModel     *model,
 346                                                     GtkTreePath      *path,
 347                                                     GtkTreeIter      *iter,
 348                                                     gpointer          data);
 349
 350 /* list */
 351 static void     gtk_combo_box_list_position        (GtkComboBox      *combo_box,
 352                                                     gint             *x,
 353                                                     gint             *y,
 354                                                     gint             *width,
 355                                                     gint             *height);
 356 static void     gtk_combo_box_list_setup           (GtkComboBox      *combo_box);
 357 static void     gtk_combo_box_list_destroy         (GtkComboBox      *combo_box);
 358
 359 static gboolean gtk_combo_box_list_button_released (GtkWidget        *widget,
 360                                                     GdkEventButton   *event,
 361                                                     gpointer          data);
 362 static gboolean gtk_combo_box_list_key_press       (GtkWidget        *widget,
 363                                                     GdkEventKey      *event,
 364                                                     gpointer          data);
 365 static gboolean gtk_combo_box_list_enter_notify    (GtkWidget        *widget,
 366                                                     GdkEventCrossing *event,
 367                                                     gpointer          data);
 368 static void     gtk_combo_box_list_auto_scroll     (GtkComboBox   *combo,
 369                                                     gint           x,
 370                                                     gint           y);
 371 static gboolean gtk_combo_box_list_scroll_timeout  (GtkComboBox   *combo);
 372 static gboolean gtk_combo_box_list_button_pressed  (GtkWidget        *widget,
 373                                                     GdkEventButton   *event,
 374                                                     gpointer          data);
 375
 376 static gboolean gtk_combo_box_list_select_func     (GtkTreeSelection *selection,
 377                                                     GtkTreeModel     *model,
 378                                                     GtkTreePath      *path,
 379                                                     gboolean          path_currently_selected,
 380                                                     gpointer          data);
 381
 382 static void     gtk_combo_box_list_row_changed     (GtkTreeModel     *model,
 383                                                     GtkTreePath      *path,
 384                                                     GtkTreeIter      *iter,
 385                                                     gpointer          data);
 386 static void     gtk_combo_box_list_popup_resize    (GtkComboBox      *combo_box);
 387
 388 /* menu */
 389 static void     gtk_combo_box_menu_setup           (GtkComboBox      *combo_box,
 390                                                     gboolean          add_children);
 391 static void     gtk_combo_box_update_title         (GtkComboBox      *combo_box);
 392 static void     gtk_combo_box_menu_destroy         (GtkComboBox      *combo_box);
 393
 394
 395 static gboolean gtk_combo_box_menu_button_press    (GtkWidget        *widget,
 396                                                     GdkEventButton   *event,
 397                                                     gpointer          user_data);
 398 static void     gtk_combo_box_menu_activate        (GtkWidget        *menu,
 399                                                     const gchar      *path,
 400                                                     GtkComboBox      *combo_box);
 401 static void     gtk_combo_box_update_sensitivity   (GtkComboBox      *combo_box);
 402 static gboolean gtk_combo_box_menu_key_press       (GtkWidget        *widget,
 403                                                     GdkEventKey      *event,
 404                                                     gpointer          data);
 405 static void     gtk_combo_box_menu_popup           (GtkComboBox      *combo_box,
 406                                                     guint             button,
 407                                                     guint32           activate_time);
 408
 409 /* cell layout */
 410 static GtkCellArea *gtk_combo_box_cell_layout_get_area       (GtkCellLayout    *cell_layout);
 411
 412 static gboolean gtk_combo_box_mnemonic_activate              (GtkWidget    *widget,
 413                                                               gboolean      group_cycling);
 414
 415 static void     gtk_combo_box_child_show                     (GtkWidget       *widget,
 416                                                               GtkComboBox     *combo_box);
 417 static void     gtk_combo_box_child_hide                     (GtkWidget       *widget,
 418                                                               GtkComboBox     *combo_box);
 419
 420 /* GtkComboBox:has-entry callbacks */
 421 static void     gtk_combo_box_entry_contents_changed         (GtkEntry        *entry,
 422                                                               gpointer         user_data);
 423 static void     gtk_combo_box_entry_active_changed           (GtkComboBox     *combo_box,
 424                                                               gpointer         user_data);
 425 static gchar   *gtk_combo_box_format_entry_text              (GtkComboBox     *combo_box,
 426                                                               const gchar     *path);
 427
 428 /* GtkBuildable method implementation */
 429 static GtkBuildableIface *parent_buildable_iface;
 430
 431 static void     gtk_combo_box_buildable_init                 (GtkBuildableIface *iface);
 432 static gboolean gtk_combo_box_buildable_custom_tag_start     (GtkBuildable  *buildable,
 433                                                               GtkBuilder    *builder,
 434                                                               GObject       *child,
 435                                                               const gchar   *tagname,
 436                                                               GMarkupParser *parser,
 437                                                               gpointer      *data);
 438 static void     gtk_combo_box_buildable_custom_tag_end       (GtkBuildable  *buildable,
 439                                                               GtkBuilder    *builder,
 440                                                               GObject       *child,
 441                                                               const gchar   *tagname,
 442                                                               gpointer      *data);
 443 static GObject *gtk_combo_box_buildable_get_internal_child   (GtkBuildable *buildable,
 444                                                               GtkBuilder   *builder,
 445                                                               const gchar  *childname);
 446
 447
 448 /* GtkCellEditable method implementations */
 449 static void     gtk_combo_box_start_editing                  (GtkCellEditable *cell_editable,
 450                                                               GdkEvent        *event);
 451
 452 static void     gtk_combo_box_get_preferred_width            (GtkWidget    *widget,
 453                                                               gint         *minimum_size,
 454                                                               gint         *natural_size);
 455 static void     gtk_combo_box_get_preferred_height           (GtkWidget    *widget,
 456                                                               gint         *minimum_size,
 457                                                               gint         *natural_size);
 458 static void     gtk_combo_box_get_preferred_width_for_height (GtkWidget    *widget,
 459                                                               gint          avail_size,
 460                                                               gint         *minimum_size,
 461                                                               gint         *natural_size);
 462 static void     gtk_combo_box_get_preferred_height_for_width (GtkWidget    *widget,
 463                                                               gint          avail_size,
 464                                                               gint         *minimum_size,
 465                                                               gint         *natural_size);
 466 static GtkWidgetPath *gtk_combo_box_get_path_for_child       (GtkContainer *container,
 467                                                               GtkWidget    *child);
 468 static void     gtk_combo_box_direction_changed              (GtkWidget    *widget,
 469                                                               GtkTextDirection  previous_direction);
 470
 471 G_DEFINE_TYPE_WITH_CODE (GtkComboBox, gtk_combo_box, GTK_TYPE_BIN,
 472                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 473                                                 gtk_combo_box_cell_layout_init)
 474                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_EDITABLE,
 475                                                 gtk_combo_box_cell_editable_init)
 476                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 477                                                 gtk_combo_box_buildable_init))
 478
 479
 480 /* common */
 481 static void
 482 gtk_combo_box_class_init (GtkComboBoxClass *klass)
 483 {
 484   GObjectClass *object_class;
 485   GtkContainerClass *container_class;
 486   GtkWidgetClass *widget_class;
 487   GtkBindingSet *binding_set;
 488
 489   container_class = (GtkContainerClass *)klass;
 490   container_class->forall = gtk_combo_box_forall;
 491   container_class->add = gtk_combo_box_add;
 492   container_class->remove = gtk_combo_box_remove;
 493   container_class->get_path_for_child = gtk_combo_box_get_path_for_child;
 494
 495   widget_class = (GtkWidgetClass *)klass;
 496   widget_class->size_allocate = gtk_combo_box_size_allocate;
 497   widget_class->draw = gtk_combo_box_draw;
 498   widget_class->scroll_event = gtk_combo_box_scroll_event;
 499   widget_class->mnemonic_activate = gtk_combo_box_mnemonic_activate;
 500   widget_class->grab_focus = gtk_combo_box_grab_focus;
 501   widget_class->style_updated = gtk_combo_box_style_updated;
 502   widget_class->state_flags_changed = gtk_combo_box_state_flags_changed;
 503   widget_class->get_preferred_width = gtk_combo_box_get_preferred_width;
 504   widget_class->get_preferred_height = gtk_combo_box_get_preferred_height;
 505   widget_class->get_preferred_height_for_width = gtk_combo_box_get_preferred_height_for_width;
 506   widget_class->get_preferred_width_for_height = gtk_combo_box_get_preferred_width_for_height;
 507   widget_class->destroy = gtk_combo_box_destroy;
 508   widget_class->direction_changed = gtk_combo_box_direction_changed;
 509
 510   object_class = (GObjectClass *)klass;
 511   object_class->constructor = gtk_combo_box_constructor;
 512   object_class->dispose = gtk_combo_box_dispose;
 513   object_class->finalize = gtk_combo_box_finalize;
 514   object_class->set_property = gtk_combo_box_set_property;
 515   object_class->get_property = gtk_combo_box_get_property;
 516
 517   klass->format_entry_text = gtk_combo_box_format_entry_text;
 518
 519   /* signals */
 520   /**
 521    * GtkComboBox::changed:
 522    * @widget: the object which received the signal
 523    *
 524    * The changed signal is emitted when the active
 525    * item is changed. The can be due to the user selecting
 526    * a different item from the list, or due to a
 527    * call to gtk_combo_box_set_active_iter().
 528    * It will also be emitted while typing into the entry of a combo box
 529    * with an entry.
 530    *
 531    * Since: 2.4
 532    */
 533   combo_box_signals[CHANGED] =
 534     g_signal_new (I_("changed"),
 535                   G_OBJECT_CLASS_TYPE (klass),
 536                   G_SIGNAL_RUN_LAST,
 537                   G_STRUCT_OFFSET (GtkComboBoxClass, changed),
 538                   NULL, NULL,
 539                   g_cclosure_marshal_VOID__VOID,
 540                   G_TYPE_NONE, 0);
 541   /**
 542    * GtkComboBox::move-active:
 543    * @widget: the object that received the signal
 544    * @scroll_type: a #GtkScrollType
 545    *
 546    * The ::move-active signal is a
 547    * <link linkend="keybinding-signals">keybinding signal</link>
 548    * which gets emitted to move the active selection.
 549    *
 550    * Since: 2.12
 551    */
 552   combo_box_signals[MOVE_ACTIVE] =
 553     g_signal_new_class_handler (I_("move-active"),
 554                                 G_OBJECT_CLASS_TYPE (klass),
 555                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 556                                 G_CALLBACK (gtk_combo_box_real_move_active),
 557                                 NULL, NULL,
 558                                 g_cclosure_marshal_VOID__ENUM,
 559                                 G_TYPE_NONE, 1,
 560                                 GTK_TYPE_SCROLL_TYPE);
 561
 562   /**
 563    * GtkComboBox::popup:
 564    * @widget: the object that received the signal
 565    *
 566    * The ::popup signal is a
 567    * <link linkend="keybinding-signals">keybinding signal</link>
 568    * which gets emitted to popup the combo box list.
 569    *
 570    * The default binding for this signal is Alt+Down.
 571    *
 572    * Since: 2.12
 573    */
 574   combo_box_signals[POPUP] =
 575     g_signal_new_class_handler (I_("popup"),
 576                                 G_OBJECT_CLASS_TYPE (klass),
 577                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 578                                 G_CALLBACK (gtk_combo_box_real_popup),
 579                                 NULL, NULL,
 580                                 g_cclosure_marshal_VOID__VOID,
 581                                 G_TYPE_NONE, 0);
 582   /**
 583    * GtkComboBox::popdown:
 584    * @button: the object which received the signal
 585    *
 586    * The ::popdown signal is a
 587    * <link linkend="keybinding-signals">keybinding signal</link>
 588    * which gets emitted to popdown the combo box list.
 589    *
 590    * The default bindings for this signal are Alt+Up and Escape.
 591    *
 592    * Since: 2.12
 593    */
 594   combo_box_signals[POPDOWN] =
 595     g_signal_new_class_handler (I_("popdown"),
 596                                 G_OBJECT_CLASS_TYPE (klass),
 597                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 598                                 G_CALLBACK (gtk_combo_box_real_popdown),
 599                                 NULL, NULL,
 600                                 _gtk_marshal_BOOLEAN__VOID,
 601                                 G_TYPE_BOOLEAN, 0);
 602
 603   /**
 604    * GtkComboBox::format-entry-text:
 605    * @combo: the object which received the signal
 606    * @path: the GtkTreePath string from the combo box's current model to format text for
 607    *
 608    * For combo boxes that are created with an entry (See GtkComboBox:has-entry).
 609    *
 610    * A signal which allows you to change how the text displayed in a combo box's
 611    * entry is displayed.
 612    *
 613    * Connect a signal handler which returns an allocated string representing
 614    * @path. That string will then be used to set the text in the combo box's entry.
 615    * The default signal handler uses the text from the GtkComboBox::entry-text-column
 616    * model column.
 617    *
 618    * Here's an example signal handler which fetches data from the model and
 619    * displays it in the entry.
 620    * |[
 621    * static gchar*
 622    * format_entry_text_callback (GtkComboBox *combo,
 623    *                             const gchar *path,
 624    *                             gpointer     user_data)
 625    * {
 626    *   GtkTreeIter iter;
 627    *   GtkTreeModel model;
 628    *   gdouble      value;
 629    *
 630    *   model = gtk_combo_box_get_model (combo);
 631    *
 632    *   gtk_tree_model_get_iter_from_string (model, &iter, path);
 633    *   gtk_tree_model_get (model, &iter,
 634    *                       THE_DOUBLE_VALUE_COLUMN, &value,
 635    *                       -1);
 636    *
 637    *   return g_strdup_printf ("&percnt;g", value);
 638    * }
 639    * ]|
 640    *
 641    * Return value: (transfer full): a newly allocated string representing @path
 642    * for the current GtkComboBox model.
 643    *
 644    * Since: 3.4
 645    */
 646   combo_box_signals[FORMAT_ENTRY_TEXT] =
 647     g_signal_new (I_("format-entry-text"),
 648                   G_TYPE_FROM_CLASS (klass),
 649                   G_SIGNAL_RUN_LAST,
 650                   G_STRUCT_OFFSET (GtkComboBoxClass, format_entry_text),
 651                   _gtk_single_string_accumulator, NULL,
 652                   _gtk_marshal_STRING__STRING,
 653                   G_TYPE_STRING, 1, G_TYPE_STRING);
 654
 655   /* key bindings */
 656   binding_set = gtk_binding_set_by_class (widget_class);
 657
 658   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, GDK_MOD1_MASK,
 659                                 "popup", 0);
 660   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Down, GDK_MOD1_MASK,
 661                                 "popup", 0);
 662
 663   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Up, GDK_MOD1_MASK,
 664                                 "popdown", 0);
 665   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Up, GDK_MOD1_MASK,
 666                                 "popdown", 0);
 667   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Escape, 0,
 668                                 "popdown", 0);
 669
 670   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Up, 0,
 671                                 "move-active", 1,
 672                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_UP);
 673   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Up, 0,
 674                                 "move-active", 1,
 675                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_UP);
 676   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Up, 0,
 677                                 "move-active", 1,
 678                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_UP);
 679   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Page_Up, 0,
 680                                 "move-active", 1,
 681                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_UP);
 682   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Home, 0,
 683                                 "move-active", 1,
 684                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_START);
 685   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Home, 0,
 686                                 "move-active", 1,
 687                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_START);
 688
 689   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, 0,
 690                                 "move-active", 1,
 691                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_DOWN);
 692   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Down, 0,
 693                                 "move-active", 1,
 694                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_DOWN);
 695   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Down, 0,
 696                                 "move-active", 1,
 697                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_DOWN);
 698   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Page_Down, 0,
 699                                 "move-active", 1,
 700                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_DOWN);
 701   gtk_binding_entry_add_signal (binding_set, GDK_KEY_End, 0,
 702                                 "move-active", 1,
 703                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_END);
 704   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_End, 0,
 705                                 "move-active", 1,
 706                                 GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_END);
 707
 708   /* properties */
 709   g_object_class_override_property (object_class,
 710                                     PROP_EDITING_CANCELED,
 711                                     "editing-canceled");
 712
 713   /**
 714    * GtkComboBox:model:
 715    *
 716    * The model from which the combo box takes the values shown
 717    * in the list.
 718    *
 719    * Since: 2.4
 720    */
 721   g_object_class_install_property (object_class,
 722                                    PROP_MODEL,
 723                                    g_param_spec_object ("model",
 724                                                         P_("ComboBox model"),
 725                                                         P_("The model for the combo box"),
 726                                                         GTK_TYPE_TREE_MODEL,
 727                                                         GTK_PARAM_READWRITE));
 728
 729   /**
 730    * GtkComboBox:wrap-width:
 731    *
 732    * If wrap-width is set to a positive value, the list will be
 733    * displayed in multiple columns, the number of columns is
 734    * determined by wrap-width.
 735    *
 736    * Since: 2.4
 737    */
 738   g_object_class_install_property (object_class,
 739                                    PROP_WRAP_WIDTH,
 740                                    g_param_spec_int ("wrap-width",
 741                                                      P_("Wrap width"),
 742                                                      P_("Wrap width for laying out the items in a grid"),
 743                                                      0,
 744                                                      G_MAXINT,
 745                                                      0,
 746                                                      GTK_PARAM_READWRITE));
 747
 748
 749   /**
 750    * GtkComboBox:row-span-column:
 751    *
 752    * If this is set to a non-negative value, it must be the index of a column
 753    * of type %G_TYPE_INT in the model.
 754    *
 755    * The values of that column are used to determine how many rows a value in
 756    * the list will span. Therefore, the values in the model column pointed to
 757    * by this property must be greater than zero and not larger than wrap-width.
 758    *
 759    * Since: 2.4
 760    */
 761   g_object_class_install_property (object_class,
 762                                    PROP_ROW_SPAN_COLUMN,
 763                                    g_param_spec_int ("row-span-column",
 764                                                      P_("Row span column"),
 765                                                      P_("TreeModel column containing the row span values"),
 766                                                      -1,
 767                                                      G_MAXINT,
 768                                                      -1,
 769                                                      GTK_PARAM_READWRITE));
 770
 771
 772   /**
 773    * GtkComboBox:column-span-column:
 774    *
 775    * If this is set to a non-negative value, it must be the index of a column
 776    * of type %G_TYPE_INT in the model.
 777    *
 778    * The values of that column are used to determine how many columns a value
 779    * in the list will span.
 780    *
 781    * Since: 2.4
 782    */
 783   g_object_class_install_property (object_class,
 784                                    PROP_COLUMN_SPAN_COLUMN,
 785                                    g_param_spec_int ("column-span-column",
 786                                                      P_("Column span column"),
 787                                                      P_("TreeModel column containing the column span values"),
 788                                                      -1,
 789                                                      G_MAXINT,
 790                                                      -1,
 791                                                      GTK_PARAM_READWRITE));
 792
 793
 794   /**
 795    * GtkComboBox:active:
 796    *
 797    * The item which is currently active. If the model is a non-flat treemodel,
 798    * and the active item is not an immediate child of the root of the tree,
 799    * this property has the value
 800    * <literal>gtk_tree_path_get_indices (path)[0]</literal>,
 801    * where <literal>path</literal> is the #GtkTreePath of the active item.
 802    *
 803    * Since: 2.4
 804    */
 805   g_object_class_install_property (object_class,
 806                                    PROP_ACTIVE,
 807                                    g_param_spec_int ("active",
 808                                                      P_("Active item"),
 809                                                      P_("The item which is currently active"),
 810                                                      -1,
 811                                                      G_MAXINT,
 812                                                      -1,
 813                                                      GTK_PARAM_READWRITE));
 814
 815   /**
 816    * GtkComboBox:add-tearoffs:
 817    *
 818    * The add-tearoffs property controls whether generated menus
 819    * have tearoff menu items.
 820    *
 821    * Note that this only affects menu style combo boxes.
 822    *
 823    * Since: 2.6
 824    */
 825   g_object_class_install_property (object_class,
 826                                    PROP_ADD_TEAROFFS,
 827                                    g_param_spec_boolean ("add-tearoffs",
 828                                                          P_("Add tearoffs to menus"),
 829                                                          P_("Whether dropdowns should have a tearoff menu item"),
 830                                                          FALSE,
 831                                                          GTK_PARAM_READWRITE));
 832
 833   /**
 834    * GtkComboBox:has-frame:
 835    *
 836    * The has-frame property controls whether a frame
 837    * is drawn around the entry.
 838    *
 839    * Since: 2.6
 840    */
 841   g_object_class_install_property (object_class,
 842                                    PROP_HAS_FRAME,
 843                                    g_param_spec_boolean ("has-frame",
 844                                                          P_("Has Frame"),
 845                                                          P_("Whether the combo box draws a frame around the child"),
 846                                                          TRUE,
 847                                                          GTK_PARAM_READWRITE));
 848
 849   g_object_class_install_property (object_class,
 850                                    PROP_FOCUS_ON_CLICK,
 851                                    g_param_spec_boolean ("focus-on-click",
 852                                                          P_("Focus on click"),
 853                                                          P_("Whether the combo box grabs focus when it is clicked with the mouse"),
 854                                                          TRUE,
 855                                                          GTK_PARAM_READWRITE));
 856
 857   /**
 858    * GtkComboBox:tearoff-title:
 859    *
 860    * A title that may be displayed by the window manager
 861    * when the popup is torn-off.
 862    *
 863    * Since: 2.10
 864    */
 865   g_object_class_install_property (object_class,
 866                                    PROP_TEAROFF_TITLE,
 867                                    g_param_spec_string ("tearoff-title",
 868                                                         P_("Tearoff Title"),
 869                                                         P_("A title that may be displayed by the window manager when the popup is torn-off"),
 870                                                         NULL,
 871                                                         GTK_PARAM_READWRITE));
 872
 873
 874   /**
 875    * GtkComboBox:popup-shown:
 876    *
 877    * Whether the combo boxes dropdown is popped up.
 878    * Note that this property is mainly useful, because
 879    * it allows you to connect to notify::popup-shown.
 880    *
 881    * Since: 2.10
 882    */
 883   g_object_class_install_property (object_class,
 884                                    PROP_POPUP_SHOWN,
 885                                    g_param_spec_boolean ("popup-shown",
 886                                                          P_("Popup shown"),
 887                                                          P_("Whether the combo's dropdown is shown"),
 888                                                          FALSE,
 889                                                          GTK_PARAM_READABLE));
 890
 891
 892    /**
 893     * GtkComboBox:button-sensitivity:
 894     *
 895     * Whether the dropdown button is sensitive when
 896     * the model is empty.
 897     *
 898     * Since: 2.14
 899     */
 900    g_object_class_install_property (object_class,
 901                                     PROP_BUTTON_SENSITIVITY,
 902                                     g_param_spec_enum ("button-sensitivity",
 903                                                        P_("Button Sensitivity"),
 904                                                        P_("Whether the dropdown button is sensitive when the model is empty"),
 905                                                        GTK_TYPE_SENSITIVITY_TYPE,
 906                                                        GTK_SENSITIVITY_AUTO,
 907                                                        GTK_PARAM_READWRITE));
 908
 909    /**
 910     * GtkComboBox:has-entry:
 911     *
 912     * Whether the combo box has an entry.
 913     *
 914     * Since: 2.24
 915     */
 916    g_object_class_install_property (object_class,
 917                                     PROP_HAS_ENTRY,
 918                                     g_param_spec_boolean ("has-entry",
 919                                                           P_("Has Entry"),
 920                                                           P_("Whether combo box has an entry"),
 921                                                           FALSE,
 922                                                           GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 923
 924    /**
 925     * GtkComboBox:entry-text-column:
 926     *
 927     * The column in the combo box's model to associate with strings from the entry
 928     * if the combo was created with #GtkComboBox:has-entry = %TRUE.
 929     *
 930     * Since: 2.24
 931     */
 932    g_object_class_install_property (object_class,
 933                                     PROP_ENTRY_TEXT_COLUMN,
 934                                     g_param_spec_int ("entry-text-column",
 935                                                       P_("Entry Text Column"),
 936                                                       P_("The column in the combo box's model to associate "
 937                                                          "with strings from the entry if the combo was "
 938                                                          "created with #GtkComboBox:has-entry = %TRUE"),
 939                                                       -1, G_MAXINT, -1,
 940                                                       GTK_PARAM_READWRITE));
 941
 942    /**
 943     * GtkComboBox:id-column:
 944     *
 945     * The column in the combo box's model that provides string
 946     * IDs for the values in the model, if != -1.
 947     *
 948     * Since: 3.0
 949     */
 950    g_object_class_install_property (object_class,
 951                                     PROP_ID_COLUMN,
 952                                     g_param_spec_int ("id-column",
 953                                                       P_("ID Column"),
 954                                                       P_("The column in the combo box's model that provides "
 955                                                       "string IDs for the values in the model"),
 956                                                       -1, G_MAXINT, -1,
 957                                                       GTK_PARAM_READWRITE));
 958
 959    /**
 960     * GtkComboBox:active-id:
 961     *
 962     * The value of the ID column of the active row.
 963     *
 964     * Since: 3.0
 965     */
 966    g_object_class_install_property (object_class,
 967                                     PROP_ACTIVE_ID,
 968                                     g_param_spec_string ("active-id",
 969                                                          P_("Active id"),
 970                                                          P_("The value of the id column "
 971                                                          "for the active row"),
 972                                                          NULL, GTK_PARAM_READWRITE));
 973
 974    /**
 975     * GtkComboBox:popup-fixed-width:
 976     *
 977     * Whether the popup's width should be a fixed width matching the
 978     * allocated width of the combo box.
 979     *
 980     * Since: 3.0
 981     */
 982    g_object_class_install_property (object_class,
 983                                     PROP_POPUP_FIXED_WIDTH,
 984                                     g_param_spec_boolean ("popup-fixed-width",
 985                                                           P_("Popup Fixed Width"),
 986                                                           P_("Whether the popup's width should be a "
 987                                                              "fixed width matching the allocated width "
 988                                                              "of the combo box"),
 989                                                           TRUE,
 990                                                           GTK_PARAM_READWRITE));
 991
 992    /**
 993     * GtkComboBox:cell-area:
 994     *
 995     * The #GtkCellArea used to layout cell renderers for this combo box.
 996     *
 997     * If no area is specified when creating the combo box with gtk_combo_box_new_with_area()
 998     * a horizontally oriented #GtkCellAreaBox will be used.
 999     *
1000     * Since: 3.0
1001     */
1002    g_object_class_install_property (object_class,
1003                                     PROP_CELL_AREA,
1004                                     g_param_spec_object ("cell-area",
1005                                                          P_("Cell Area"),
1006                                                          P_("The GtkCellArea used to layout cells"),
1007                                                          GTK_TYPE_CELL_AREA,
1008                                                          GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
1009
1010   gtk_widget_class_install_style_property (widget_class,
1011                                            g_param_spec_boolean ("appears-as-list",
1012                                                                  P_("Appears as list"),
1013                                                                  P_("Whether dropdowns should look like lists rather than menus"),
1014                                                                  FALSE,
1015                                                                  GTK_PARAM_READABLE));
1016
1017   /**
1018    * GtkComboBox:arrow-size:
1019    *
1020    * Sets the minimum size of the arrow in the combo box.  Note
1021    * that the arrow size is coupled to the font size, so in case
1022    * a larger font is used, the arrow will be larger than set
1023    * by arrow size.
1024    *
1025    * Since: 2.12
1026    */
1027   gtk_widget_class_install_style_property (widget_class,
1028                                            g_param_spec_int ("arrow-size",
1029                                                              P_("Arrow Size"),
1030                                                              P_("The minimum size of the arrow in the combo box"),
1031                                                              0,
1032                                                              G_MAXINT,
1033                                                              15,
1034                                                              GTK_PARAM_READABLE));
1035
1036   /**
1037    * GtkComboBox:arrow-scaling:
1038    *
1039    * Sets the amount of space used up by the combobox arrow,
1040    * proportional to the font size.
1041    *
1042    * Since: 3.2
1043    */
1044   gtk_widget_class_install_style_property (widget_class,
1045                                            g_param_spec_float ("arrow-scaling",
1046                                                                P_("Arrow Scaling"),
1047                                                                P_("The amount of space used by the arrow"),
1048                                                              0,
1049                                                              2.0,
1050                                                              1.0,
1051                                                              GTK_PARAM_READABLE));
1052
1053   /**
1054    * GtkComboBox:shadow-type:
1055    *
1056    * Which kind of shadow to draw around the combo box.
1057    *
1058    * Since: 2.12
1059    */
1060   gtk_widget_class_install_style_property (widget_class,
1061                                            g_param_spec_enum ("shadow-type",
1062                                                               P_("Shadow type"),
1063                                                               P_("Which kind of shadow to draw around the combo box"),
1064                                                               GTK_TYPE_SHADOW_TYPE,
1065                                                               GTK_SHADOW_NONE,
1066                                                               GTK_PARAM_READABLE));
1067
1068   g_type_class_add_private (object_class, sizeof (GtkComboBoxPrivate));
1069
1070   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_COMBO_BOX_ACCESSIBLE);
1071 }
1072
1073 static void
1074 gtk_combo_box_buildable_init (GtkBuildableIface *iface)
1075 {
1076   parent_buildable_iface = g_type_interface_peek_parent (iface);
1077   iface->add_child = _gtk_cell_layout_buildable_add_child;
1078   iface->custom_tag_start = gtk_combo_box_buildable_custom_tag_start;
1079   iface->custom_tag_end = gtk_combo_box_buildable_custom_tag_end;
1080   iface->get_internal_child = gtk_combo_box_buildable_get_internal_child;
1081 }
1082
1083 static void
1084 gtk_combo_box_cell_layout_init (GtkCellLayoutIface *iface)
1085 {
1086   iface->get_area = gtk_combo_box_cell_layout_get_area;
1087 }
1088
1089 static void
1090 gtk_combo_box_cell_editable_init (GtkCellEditableIface *iface)
1091 {
1092   iface->start_editing = gtk_combo_box_start_editing;
1093 }
1094
1095 static void
1096 gtk_combo_box_init (GtkComboBox *combo_box)
1097 {
1098   GtkComboBoxPrivate *priv;
1099
1100   combo_box->priv = G_TYPE_INSTANCE_GET_PRIVATE (combo_box,
1101                                                  GTK_TYPE_COMBO_BOX,
1102                                                  GtkComboBoxPrivate);
1103   priv = combo_box->priv;
1104
1105   priv->wrap_width = 0;
1106
1107   priv->active = -1;
1108   priv->active_row = NULL;
1109   priv->col_column = -1;
1110   priv->row_column = -1;
1111
1112   priv->popup_shown = FALSE;
1113   priv->add_tearoffs = FALSE;
1114   priv->has_frame = TRUE;
1115   priv->is_cell_renderer = FALSE;
1116   priv->editing_canceled = FALSE;
1117   priv->auto_scroll = FALSE;
1118   priv->focus_on_click = TRUE;
1119   priv->button_sensitivity = GTK_SENSITIVITY_AUTO;
1120   priv->has_entry = FALSE;
1121   priv->popup_fixed_width = TRUE;
1122
1123   priv->text_column = -1;
1124   priv->text_renderer = NULL;
1125   priv->id_column = -1;
1126 }
1127
1128 static void
1129 gtk_combo_box_set_property (GObject      *object,
1130                             guint         prop_id,
1131                             const GValue *value,
1132                             GParamSpec   *pspec)
1133 {
1134   GtkComboBox *combo_box = GTK_COMBO_BOX (object);
1135   GtkComboBoxPrivate *priv = combo_box->priv;
1136   GtkCellArea *area;
1137
1138   switch (prop_id)
1139     {
1140     case PROP_MODEL:
1141       gtk_combo_box_set_model (combo_box, g_value_get_object (value));
1142       break;
1143
1144     case PROP_WRAP_WIDTH:
1145       gtk_combo_box_set_wrap_width (combo_box, g_value_get_int (value));
1146       break;
1147
1148     case PROP_ROW_SPAN_COLUMN:
1149       gtk_combo_box_set_row_span_column (combo_box, g_value_get_int (value));
1150       break;
1151
1152     case PROP_COLUMN_SPAN_COLUMN:
1153       gtk_combo_box_set_column_span_column (combo_box, g_value_get_int (value));
1154       break;
1155
1156     case PROP_ACTIVE:
1157       gtk_combo_box_set_active (combo_box, g_value_get_int (value));
1158       break;
1159
1160     case PROP_ADD_TEAROFFS:
1161       gtk_combo_box_set_add_tearoffs (combo_box, g_value_get_boolean (value));
1162       break;
1163
1164     case PROP_HAS_FRAME:
1165       priv->has_frame = g_value_get_boolean (value);
1166
1167       if (priv->has_entry)
1168         {
1169           GtkWidget *child;
1170
1171           child = gtk_bin_get_child (GTK_BIN (combo_box));
1172
1173           gtk_entry_set_has_frame (GTK_ENTRY (child), priv->has_frame);
1174         }
1175
1176       break;
1177
1178     case PROP_FOCUS_ON_CLICK:
1179       gtk_combo_box_set_focus_on_click (combo_box,
1180                                         g_value_get_boolean (value));
1181       break;
1182
1183     case PROP_TEAROFF_TITLE:
1184       gtk_combo_box_set_title (combo_box, g_value_get_string (value));
1185       break;
1186
1187     case PROP_POPUP_SHOWN:
1188       if (g_value_get_boolean (value))
1189         gtk_combo_box_popup (combo_box);
1190       else
1191         gtk_combo_box_popdown (combo_box);
1192       break;
1193
1194     case PROP_BUTTON_SENSITIVITY:
1195       gtk_combo_box_set_button_sensitivity (combo_box,
1196                                             g_value_get_enum (value));
1197       break;
1198
1199     case PROP_POPUP_FIXED_WIDTH:
1200       gtk_combo_box_set_popup_fixed_width (combo_box,
1201                                            g_value_get_boolean (value));
1202       break;
1203
1204     case PROP_EDITING_CANCELED:
1205       priv->editing_canceled = g_value_get_boolean (value);
1206       break;
1207
1208     case PROP_HAS_ENTRY:
1209       priv->has_entry = g_value_get_boolean (value);
1210       break;
1211
1212     case PROP_ENTRY_TEXT_COLUMN:
1213       gtk_combo_box_set_entry_text_column (combo_box, g_value_get_int (value));
1214       break;
1215
1216     case PROP_ID_COLUMN:
1217       gtk_combo_box_set_id_column (combo_box, g_value_get_int (value));
1218       break;
1219
1220     case PROP_ACTIVE_ID:
1221       gtk_combo_box_set_active_id (combo_box, g_value_get_string (value));
1222       break;
1223
1224     case PROP_CELL_AREA:
1225       /* Construct-only, can only be assigned once */
1226       area = g_value_get_object (value);
1227       if (area)
1228         {
1229           if (priv->area != NULL)
1230             {
1231               g_warning ("cell-area has already been set, ignoring construct property");
1232               g_object_ref_sink (area);
1233               g_object_unref (area);
1234             }
1235           else
1236             priv->area = g_object_ref_sink (area);
1237         }
1238       break;
1239
1240     default:
1241       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1242       break;
1243     }
1244 }
1245
1246 static void
1247 gtk_combo_box_get_property (GObject    *object,
1248                             guint       prop_id,
1249                             GValue     *value,
1250                             GParamSpec *pspec)
1251 {
1252   GtkComboBox *combo_box = GTK_COMBO_BOX (object);
1253   GtkComboBoxPrivate *priv = combo_box->priv;
1254
1255   switch (prop_id)
1256     {
1257       case PROP_MODEL:
1258         g_value_set_object (value, combo_box->priv->model);
1259         break;
1260
1261       case PROP_WRAP_WIDTH:
1262         g_value_set_int (value, combo_box->priv->wrap_width);
1263         break;
1264
1265       case PROP_ROW_SPAN_COLUMN:
1266         g_value_set_int (value, combo_box->priv->row_column);
1267         break;
1268
1269       case PROP_COLUMN_SPAN_COLUMN:
1270         g_value_set_int (value, combo_box->priv->col_column);
1271         break;
1272
1273       case PROP_ACTIVE:
1274         g_value_set_int (value, gtk_combo_box_get_active (combo_box));
1275         break;
1276
1277       case PROP_ADD_TEAROFFS:
1278         g_value_set_boolean (value, gtk_combo_box_get_add_tearoffs (combo_box));
1279         break;
1280
1281       case PROP_HAS_FRAME:
1282         g_value_set_boolean (value, combo_box->priv->has_frame);
1283         break;
1284
1285       case PROP_FOCUS_ON_CLICK:
1286         g_value_set_boolean (value, combo_box->priv->focus_on_click);
1287         break;
1288
1289       case PROP_TEAROFF_TITLE:
1290         g_value_set_string (value, gtk_combo_box_get_title (combo_box));
1291         break;
1292
1293       case PROP_POPUP_SHOWN:
1294         g_value_set_boolean (value, combo_box->priv->popup_shown);
1295         break;
1296
1297       case PROP_BUTTON_SENSITIVITY:
1298         g_value_set_enum (value, combo_box->priv->button_sensitivity);
1299         break;
1300
1301       case PROP_POPUP_FIXED_WIDTH:
1302         g_value_set_boolean (value, combo_box->priv->popup_fixed_width);
1303         break;
1304
1305       case PROP_EDITING_CANCELED:
1306         g_value_set_boolean (value, priv->editing_canceled);
1307         break;
1308
1309       case PROP_HAS_ENTRY:
1310         g_value_set_boolean (value, priv->has_entry);
1311         break;
1312
1313       case PROP_ENTRY_TEXT_COLUMN:
1314         g_value_set_int (value, priv->text_column);
1315         break;
1316
1317       case PROP_ID_COLUMN:
1318         g_value_set_int (value, priv->id_column);
1319         break;
1320
1321       case PROP_ACTIVE_ID:
1322         g_value_set_string (value, gtk_combo_box_get_active_id (combo_box));
1323         break;
1324
1325       case PROP_CELL_AREA:
1326         g_value_set_object (value, priv->area);
1327         break;
1328
1329       default:
1330         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1331         break;
1332     }
1333 }
1334
1335 static void
1336 gtk_combo_box_state_flags_changed (GtkWidget     *widget,
1337                                    GtkStateFlags  previous)
1338 {
1339   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
1340   GtkComboBoxPrivate *priv = combo_box->priv;
1341
1342   if (gtk_widget_get_realized (widget))
1343     {
1344       if (priv->tree_view && priv->cell_view)
1345         {
1346           GtkStyleContext *context;
1347           GtkStateFlags state;
1348           GdkRGBA color;
1349
1350           context  = gtk_widget_get_style_context (widget);
1351           state = gtk_widget_get_state_flags (widget);
1352           gtk_style_context_get_background_color (context, state, &color);
1353
1354           gtk_cell_view_set_background_rgba (GTK_CELL_VIEW (priv->cell_view), &color);
1355         }
1356     }
1357
1358   gtk_widget_queue_draw (widget);
1359 }
1360
1361 static void
1362 gtk_combo_box_button_state_flags_changed (GtkWidget     *widget,
1363                                           GtkStateFlags  previous,
1364                                           gpointer       data)
1365 {
1366   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
1367   GtkComboBoxPrivate *priv = combo_box->priv;
1368
1369   if (gtk_widget_get_realized (widget))
1370     {
1371       if (!priv->tree_view && priv->cell_view)
1372         gtk_widget_set_state_flags (priv->cell_view,
1373                                     gtk_widget_get_state_flags (widget),
1374                                     TRUE);
1375     }
1376
1377   gtk_widget_queue_draw (widget);
1378 }
1379
1380 static void
1381 gtk_combo_box_invalidate_order (GtkComboBox *combo_box)
1382 {
1383   gtk_container_forall (GTK_CONTAINER (combo_box),
1384                         (GtkCallback) gtk_widget_reset_style,
1385                         NULL);
1386 }
1387
1388 static void
1389 gtk_combo_box_direction_changed (GtkWidget        *widget,
1390                                  GtkTextDirection  previous_direction)
1391 {
1392   gtk_combo_box_invalidate_order (GTK_COMBO_BOX (widget));
1393 }
1394
1395 static GtkWidgetPath *
1396 gtk_combo_box_get_path_for_child (GtkContainer *container,
1397                                   GtkWidget    *child)
1398 {
1399   GtkComboBoxPrivate *priv = GTK_COMBO_BOX (container)->priv;
1400   GtkWidgetPath *path;
1401   GtkWidget *widget;
1402   gboolean found = FALSE;
1403   GList *visible_children, *l;
1404   GtkWidgetPath *sibling_path;
1405   int pos;
1406
1407   path = gtk_widget_path_copy (gtk_widget_get_path (GTK_WIDGET (container)));
1408
1409   if (gtk_widget_get_visible (child))
1410     {
1411       visible_children = NULL;
1412
1413       if (priv->button && gtk_widget_get_visible (priv->button))
1414         visible_children = g_list_prepend (visible_children, priv->button);
1415
1416       if (priv->cell_view_frame && gtk_widget_get_visible (priv->cell_view_frame))
1417         visible_children = g_list_prepend (visible_children, priv->cell_view_frame);
1418
1419       widget = gtk_bin_get_child (GTK_BIN (container));
1420       if (widget && gtk_widget_get_visible (widget))
1421         visible_children = g_list_prepend (visible_children, widget);
1422
1423       if (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL)
1424         visible_children = g_list_reverse (visible_children);
1425
1426       pos = 0;
1427
1428       for (l = visible_children; l; l = l->next)
1429         {
1430           widget = l->data;
1431
1432           if (widget == child)
1433             {
1434               found = TRUE;
1435               break;
1436             }
1437
1438           pos++;
1439         }
1440     }
1441
1442   if (found)
1443     {
1444       sibling_path = gtk_widget_path_new ();
1445
1446       for (l = visible_children; l; l = l->next)
1447         gtk_widget_path_append_for_widget (sibling_path, l->data);
1448
1449       gtk_widget_path_append_with_siblings (path, sibling_path, pos);
1450
1451       g_list_free (visible_children);
1452       gtk_widget_path_unref (sibling_path);
1453     }
1454   else
1455     {
1456       gtk_widget_path_append_for_widget (path, child);
1457     }
1458
1459   return path;
1460 }
1461
1462 static void
1463 gtk_combo_box_check_appearance (GtkComboBox *combo_box)
1464 {
1465   GtkComboBoxPrivate *priv = combo_box->priv;
1466   gboolean appears_as_list;
1467
1468   /* if wrap_width > 0, then we are in grid-mode and forced to use
1469    * unix style
1470    */
1471   if (priv->wrap_width)
1472     appears_as_list = FALSE;
1473   else
1474     gtk_widget_style_get (GTK_WIDGET (combo_box),
1475                           "appears-as-list", &appears_as_list,
1476                           NULL);
1477
1478   if (appears_as_list)
1479     {
1480       /* Destroy all the menu mode widgets, if they exist. */
1481       if (GTK_IS_MENU (priv->popup_widget))
1482         gtk_combo_box_menu_destroy (combo_box);
1483
1484       /* Create the list mode widgets, if they don't already exist. */
1485       if (!GTK_IS_TREE_VIEW (priv->tree_view))
1486         gtk_combo_box_list_setup (combo_box);
1487     }
1488   else
1489     {
1490       /* Destroy all the list mode widgets, if they exist. */
1491       if (GTK_IS_TREE_VIEW (priv->tree_view))
1492         gtk_combo_box_list_destroy (combo_box);
1493
1494       /* Create the menu mode widgets, if they don't already exist. */
1495       if (!GTK_IS_MENU (priv->popup_widget))
1496         gtk_combo_box_menu_setup (combo_box, TRUE);
1497     }
1498
1499   gtk_widget_style_get (GTK_WIDGET (combo_box),
1500                         "shadow-type", &priv->shadow_type,
1501                         NULL);
1502 }
1503
1504 static void
1505 gtk_combo_box_style_updated (GtkWidget *widget)
1506 {
1507   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
1508   GtkComboBoxPrivate *priv = combo_box->priv;
1509   GtkWidget *child;
1510
1511   GTK_WIDGET_CLASS (gtk_combo_box_parent_class)->style_updated (widget);
1512
1513   gtk_combo_box_check_appearance (combo_box);
1514
1515   if (priv->tree_view && priv->cell_view)
1516     {
1517       GtkStyleContext *context;
1518       GtkStateFlags state;
1519       GdkRGBA color;
1520
1521       context  = gtk_widget_get_style_context (widget);
1522       state = gtk_widget_get_state_flags (widget);
1523       gtk_style_context_get_background_color (context, state, &color);
1524
1525       gtk_cell_view_set_background_rgba (GTK_CELL_VIEW (priv->cell_view), &color);
1526     }
1527
1528   child = gtk_bin_get_child (GTK_BIN (combo_box));
1529   if (GTK_IS_ENTRY (child))
1530     g_object_set (child, "shadow-type",
1531                   GTK_SHADOW_NONE == priv->shadow_type ?
1532                   GTK_SHADOW_IN : GTK_SHADOW_NONE, NULL);
1533 }
1534
1535 static void
1536 gtk_combo_box_button_toggled (GtkWidget *widget,
1537                               gpointer   data)
1538 {
1539   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
1540
1541   if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
1542     {
1543       if (!combo_box->priv->popup_in_progress)
1544         gtk_combo_box_popup (combo_box);
1545     }
1546   else
1547     gtk_combo_box_popdown (combo_box);
1548 }
1549
1550 static void
1551 gtk_combo_box_add (GtkContainer *container,
1552                    GtkWidget    *widget)
1553 {
1554   GtkComboBox *combo_box = GTK_COMBO_BOX (container);
1555   GtkComboBoxPrivate *priv = combo_box->priv;
1556
1557   if (priv->has_entry && !GTK_IS_ENTRY (widget))
1558     {
1559       g_warning ("Attempting to add a widget with type %s to a GtkComboBox that needs an entry "
1560                  "(need an instance of GtkEntry or of a subclass)",
1561                  G_OBJECT_TYPE_NAME (widget));
1562       return;
1563     }
1564
1565   if (priv->cell_view &&
1566       gtk_widget_get_parent (priv->cell_view))
1567     {
1568       gtk_widget_unparent (priv->cell_view);
1569       _gtk_bin_set_child (GTK_BIN (container), NULL);
1570       gtk_widget_queue_resize (GTK_WIDGET (container));
1571     }
1572
1573   gtk_widget_set_parent (widget, GTK_WIDGET (container));
1574   _gtk_bin_set_child (GTK_BIN (container), widget);
1575
1576   if (priv->cell_view &&
1577       widget != priv->cell_view)
1578     {
1579       /* since the cell_view was unparented, it's gone now */
1580       priv->cell_view = NULL;
1581
1582       if (!priv->tree_view && priv->separator)
1583         {
1584           gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (priv->separator)),
1585                                 priv->separator);
1586           priv->separator = NULL;
1587
1588           gtk_widget_queue_resize (GTK_WIDGET (container));
1589         }
1590       else if (priv->cell_view_frame)
1591         {
1592           gtk_widget_unparent (priv->cell_view_frame);
1593           priv->cell_view_frame = NULL;
1594           priv->box = NULL;
1595         }
1596     }
1597
1598   if (priv->has_entry)
1599     {
1600       /* this flag is a hack to tell the entry to fill its allocation.
1601        */
1602       _gtk_entry_set_is_cell_renderer (GTK_ENTRY (widget), TRUE);
1603
1604       g_signal_connect (widget, "changed",
1605                         G_CALLBACK (gtk_combo_box_entry_contents_changed),
1606                         combo_box);
1607
1608       gtk_entry_set_has_frame (GTK_ENTRY (widget), priv->has_frame);
1609     }
1610 }
1611
1612 static void
1613 gtk_combo_box_remove (GtkContainer *container,
1614                       GtkWidget    *widget)
1615 {
1616   GtkComboBox *combo_box = GTK_COMBO_BOX (container);
1617   GtkComboBoxPrivate *priv = combo_box->priv;
1618   GtkTreePath *path;
1619   gboolean appears_as_list;
1620
1621   if (priv->has_entry)
1622     {
1623       GtkWidget *child_widget;
1624
1625       child_widget = gtk_bin_get_child (GTK_BIN (container));
1626       if (widget && widget == child_widget)
1627         {
1628           g_signal_handlers_disconnect_by_func (widget,
1629                                                 gtk_combo_box_entry_contents_changed,
1630                                                 container);
1631           _gtk_entry_set_is_cell_renderer (GTK_ENTRY (widget), FALSE);
1632         }
1633     }
1634
1635   if (widget == priv->cell_view)
1636     priv->cell_view = NULL;
1637
1638   gtk_widget_unparent (widget);
1639   _gtk_bin_set_child (GTK_BIN (container), NULL);
1640
1641   if (gtk_widget_in_destruction (GTK_WIDGET (combo_box)))
1642     return;
1643
1644   gtk_widget_queue_resize (GTK_WIDGET (container));
1645
1646   if (!priv->tree_view)
1647     appears_as_list = FALSE;
1648   else
1649     appears_as_list = TRUE;
1650
1651   if (appears_as_list)
1652     gtk_combo_box_list_destroy (combo_box);
1653   else if (GTK_IS_MENU (priv->popup_widget))
1654     {
1655       gtk_combo_box_menu_destroy (combo_box);
1656       gtk_menu_detach (GTK_MENU (priv->popup_widget));
1657       priv->popup_widget = NULL;
1658     }
1659
1660   if (!priv->cell_view)
1661     {
1662       priv->cell_view = gtk_cell_view_new ();
1663       gtk_widget_set_parent (priv->cell_view, GTK_WIDGET (container));
1664       _gtk_bin_set_child (GTK_BIN (container), priv->cell_view);
1665
1666       gtk_widget_show (priv->cell_view);
1667       gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view),
1668                                priv->model);
1669     }
1670
1671
1672   if (appears_as_list)
1673     gtk_combo_box_list_setup (combo_box);
1674   else
1675     gtk_combo_box_menu_setup (combo_box, TRUE);
1676
1677   if (gtk_tree_row_reference_valid (priv->active_row))
1678     {
1679       path = gtk_tree_row_reference_get_path (priv->active_row);
1680       gtk_combo_box_set_active_internal (combo_box, path);
1681       gtk_tree_path_free (path);
1682     }
1683   else
1684     gtk_combo_box_set_active_internal (combo_box, NULL);
1685 }
1686
1687 static void
1688 gtk_combo_box_menu_show (GtkWidget *menu,
1689                          gpointer   user_data)
1690 {
1691   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
1692   GtkComboBoxPrivate *priv = combo_box->priv;
1693
1694   gtk_combo_box_child_show (menu, user_data);
1695
1696   priv->popup_in_progress = TRUE;
1697   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
1698                                 TRUE);
1699   priv->popup_in_progress = FALSE;
1700 }
1701
1702 static void
1703 gtk_combo_box_menu_hide (GtkWidget *menu,
1704                          gpointer   user_data)
1705 {
1706   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
1707
1708   gtk_combo_box_child_hide (menu,user_data);
1709
1710   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (combo_box->priv->button),
1711                                 FALSE);
1712 }
1713
1714 static void
1715 gtk_combo_box_detacher (GtkWidget *widget,
1716                         GtkMenu          *menu)
1717 {
1718   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
1719   GtkComboBoxPrivate *priv = combo_box->priv;
1720
1721   g_return_if_fail (priv->popup_widget == (GtkWidget *) menu);
1722
1723   g_signal_handlers_disconnect_by_func (menu->priv->toplevel,
1724                                         gtk_combo_box_menu_show,
1725                                         combo_box);
1726   g_signal_handlers_disconnect_by_func (menu->priv->toplevel,
1727                                         gtk_combo_box_menu_hide,
1728                                         combo_box);
1729
1730   priv->popup_widget = NULL;
1731 }
1732
1733 static void
1734 gtk_combo_box_set_popup_widget (GtkComboBox *combo_box,
1735                                 GtkWidget   *popup)
1736 {
1737   GtkComboBoxPrivate *priv = combo_box->priv;
1738
1739   if (GTK_IS_MENU (priv->popup_widget))
1740     {
1741       gtk_menu_detach (GTK_MENU (priv->popup_widget));
1742       priv->popup_widget = NULL;
1743     }
1744   else if (priv->popup_widget)
1745     {
1746       gtk_container_remove (GTK_CONTAINER (priv->scrolled_window),
1747                             priv->popup_widget);
1748       g_object_unref (priv->popup_widget);
1749       priv->popup_widget = NULL;
1750     }
1751
1752   if (GTK_IS_MENU (popup))
1753     {
1754       if (priv->popup_window)
1755         {
1756           gtk_widget_destroy (priv->popup_window);
1757           priv->popup_window = NULL;
1758         }
1759
1760       priv->popup_widget = popup;
1761
1762       /*
1763        * Note that we connect to show/hide on the toplevel, not the
1764        * menu itself, since the menu is not shown/hidden when it is
1765        * popped up while torn-off.
1766        */
1767       g_signal_connect (GTK_MENU (popup)->priv->toplevel, "show",
1768                         G_CALLBACK (gtk_combo_box_menu_show), combo_box);
1769       g_signal_connect (GTK_MENU (popup)->priv->toplevel, "hide",
1770                         G_CALLBACK (gtk_combo_box_menu_hide), combo_box);
1771
1772       gtk_menu_attach_to_widget (GTK_MENU (popup),
1773                                  GTK_WIDGET (combo_box),
1774                                  gtk_combo_box_detacher);
1775     }
1776   else
1777     {
1778       if (!priv->popup_window)
1779         {
1780           GtkWidget *toplevel;
1781
1782           priv->popup_window = gtk_window_new (GTK_WINDOW_POPUP);
1783           gtk_widget_set_name (priv->popup_window, "gtk-combobox-popup-window");
1784
1785           gtk_window_set_type_hint (GTK_WINDOW (priv->popup_window),
1786                                     GDK_WINDOW_TYPE_HINT_COMBO);
1787
1788           g_signal_connect (GTK_WINDOW (priv->popup_window),"show",
1789                             G_CALLBACK (gtk_combo_box_child_show),
1790                             combo_box);
1791           g_signal_connect (GTK_WINDOW (priv->popup_window),"hide",
1792                             G_CALLBACK (gtk_combo_box_child_hide),
1793                             combo_box);
1794
1795           toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo_box));
1796           if (GTK_IS_WINDOW (toplevel))
1797             {
1798               gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
1799                                            GTK_WINDOW (priv->popup_window));
1800               gtk_window_set_transient_for (GTK_WINDOW (priv->popup_window),
1801                                             GTK_WINDOW (toplevel));
1802             }
1803
1804           gtk_window_set_resizable (GTK_WINDOW (priv->popup_window), FALSE);
1805           gtk_window_set_screen (GTK_WINDOW (priv->popup_window),
1806                                  gtk_widget_get_screen (GTK_WIDGET (combo_box)));
1807
1808           priv->scrolled_window = gtk_scrolled_window_new (NULL, NULL);
1809
1810           gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
1811                                           GTK_POLICY_NEVER,
1812                                           GTK_POLICY_NEVER);
1813           gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->scrolled_window),
1814                                                GTK_SHADOW_IN);
1815
1816           gtk_widget_show (priv->scrolled_window);
1817
1818           gtk_container_add (GTK_CONTAINER (priv->popup_window),
1819                              priv->scrolled_window);
1820         }
1821
1822       gtk_container_add (GTK_CONTAINER (priv->scrolled_window),
1823                          popup);
1824
1825       gtk_widget_show (popup);
1826       g_object_ref (popup);
1827       priv->popup_widget = popup;
1828     }
1829 }
1830
1831 static void
1832 get_widget_padding (GtkWidget *widget,
1833                     GtkBorder *padding)
1834 {
1835   GtkStyleContext *context;
1836   GtkStateFlags state;
1837
1838   context = gtk_widget_get_style_context (widget);
1839   state = gtk_style_context_get_state (context);
1840
1841   gtk_style_context_get_padding (context, state, padding);
1842 }
1843
1844 static void
1845 gtk_combo_box_menu_position_below (GtkMenu  *menu,
1846                                    gint     *x,
1847                                    gint     *y,
1848                                    gint     *push_in,
1849                                    gpointer  user_data)
1850 {
1851   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
1852   GtkAllocation child_allocation;
1853   gint sx, sy;
1854   GtkWidget *child;
1855   GtkRequisition req;
1856   GdkScreen *screen;
1857   gint monitor_num;
1858   GdkRectangle monitor;
1859   GtkBorder padding;
1860
1861   /* FIXME: is using the size request here broken? */
1862   child = gtk_bin_get_child (GTK_BIN (combo_box));
1863
1864   sx = sy = 0;
1865
1866   gtk_widget_get_allocation (child, &child_allocation);
1867
1868   if (!gtk_widget_get_has_window (child))
1869     {
1870       sx += child_allocation.x;
1871       sy += child_allocation.y;
1872     }
1873
1874   gdk_window_get_root_coords (gtk_widget_get_window (child),
1875                               sx, sy, &sx, &sy);
1876   get_widget_padding (GTK_WIDGET (combo_box), &padding);
1877   sx -= padding.left;
1878
1879   if (combo_box->priv->popup_fixed_width)
1880     gtk_widget_get_preferred_size (GTK_WIDGET (menu), &req, NULL);
1881   else
1882     gtk_widget_get_preferred_size (GTK_WIDGET (menu), NULL, &req);
1883
1884   if (gtk_widget_get_direction (GTK_WIDGET (combo_box)) == GTK_TEXT_DIR_LTR)
1885     *x = sx;
1886   else
1887     *x = sx + child_allocation.width - req.width;
1888   *y = sy;
1889
1890   screen = gtk_widget_get_screen (GTK_WIDGET (combo_box));
1891   monitor_num = gdk_screen_get_monitor_at_window (screen,
1892                                                   gtk_widget_get_window (GTK_WIDGET (combo_box)));
1893   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
1894
1895   if (*x < monitor.x)
1896     *x = monitor.x;
1897   else if (*x + req.width > monitor.x + monitor.width)
1898     *x = monitor.x + monitor.width - req.width;
1899
1900   if (monitor.y + monitor.height - *y - child_allocation.height >= req.height)
1901     *y += child_allocation.height;
1902   else if (*y - monitor.y >= req.height)
1903     *y -= req.height;
1904   else if (monitor.y + monitor.height - *y - child_allocation.height > *y - monitor.y)
1905     *y += child_allocation.height;
1906   else
1907     *y -= req.height;
1908
1909    *push_in = FALSE;
1910 }
1911
1912 static void
1913 gtk_combo_box_menu_position_over (GtkMenu  *menu,
1914                                   gint     *x,
1915                                   gint     *y,
1916                                   gboolean *push_in,
1917                                   gpointer  user_data)
1918 {
1919   GtkComboBox    *combo_box;
1920   GtkWidget      *active;
1921   GtkWidget      *child;
1922   GtkWidget      *widget;
1923   GtkAllocation   allocation;
1924   GtkAllocation   child_allocation;
1925   GList          *children;
1926   gint            screen_width;
1927   gint            menu_xpos;
1928   gint            menu_ypos;
1929   gint            menu_width;
1930
1931   combo_box = GTK_COMBO_BOX (user_data);
1932   widget = GTK_WIDGET (combo_box);
1933
1934   active = gtk_menu_get_active (GTK_MENU (combo_box->priv->popup_widget));
1935
1936   gtk_widget_get_allocation (widget, &allocation);
1937
1938   menu_xpos = allocation.x;
1939   menu_ypos = allocation.y + allocation.height / 2 - 2;
1940
1941   if (combo_box->priv->popup_fixed_width)
1942     gtk_widget_get_preferred_width (GTK_WIDGET (menu), &menu_width, NULL);
1943   else
1944     gtk_widget_get_preferred_width (GTK_WIDGET (menu), NULL, &menu_width);
1945
1946   if (active != NULL)
1947     {
1948       gtk_widget_get_allocation (active, &child_allocation);
1949       menu_ypos -= child_allocation.height / 2;
1950     }
1951
1952   children = GTK_MENU_SHELL (combo_box->priv->popup_widget)->priv->children;
1953   while (children)
1954     {
1955       child = children->data;
1956
1957       if (active == child)
1958         break;
1959
1960       if (gtk_widget_get_visible (child))
1961         {
1962           gtk_widget_get_allocation (child, &child_allocation);
1963
1964           menu_ypos -= child_allocation.height;
1965         }
1966
1967       children = children->next;
1968     }
1969
1970   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
1971     menu_xpos = menu_xpos + allocation.width - menu_width;
1972
1973   gdk_window_get_root_coords (gtk_widget_get_window (widget),
1974                               menu_xpos, menu_ypos,
1975                               &menu_xpos, &menu_ypos);
1976
1977   /* Clamp the position on screen */
1978   screen_width = gdk_screen_get_width (gtk_widget_get_screen (widget));
1979
1980   if (menu_xpos < 0)
1981     menu_xpos = 0;
1982   else if ((menu_xpos + menu_width) > screen_width)
1983     menu_xpos -= ((menu_xpos + menu_width) - screen_width);
1984
1985   *x = menu_xpos;
1986   *y = menu_ypos;
1987
1988   *push_in = TRUE;
1989 }
1990
1991 static void
1992 gtk_combo_box_menu_position (GtkMenu  *menu,
1993                              gint     *x,
1994                              gint     *y,
1995                              gint     *push_in,
1996                              gpointer  user_data)
1997 {
1998   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
1999   GtkComboBoxPrivate *priv = combo_box->priv;
2000   GtkWidget *menu_item;
2001
2002   if (priv->wrap_width > 0 || priv->cell_view == NULL)
2003     gtk_combo_box_menu_position_below (menu, x, y, push_in, user_data);
2004   else
2005     {
2006       /* FIXME handle nested menus better */
2007       menu_item = gtk_menu_get_active (GTK_MENU (priv->popup_widget));
2008       if (menu_item)
2009         gtk_menu_shell_select_item (GTK_MENU_SHELL (priv->popup_widget),
2010                                     menu_item);
2011
2012       gtk_combo_box_menu_position_over (menu, x, y, push_in, user_data);
2013     }
2014
2015   if (!gtk_widget_get_visible (GTK_MENU (priv->popup_widget)->priv->toplevel))
2016     gtk_window_set_type_hint (GTK_WINDOW (GTK_MENU (priv->popup_widget)->priv->toplevel),
2017                               GDK_WINDOW_TYPE_HINT_COMBO);
2018 }
2019
2020 static void
2021 gtk_combo_box_list_position (GtkComboBox *combo_box,
2022                              gint        *x,
2023                              gint        *y,
2024                              gint        *width,
2025                              gint        *height)
2026 {
2027   GtkComboBoxPrivate *priv = combo_box->priv;
2028   GtkAllocation allocation;
2029   GdkScreen *screen;
2030   gint monitor_num;
2031   GdkRectangle monitor;
2032   GtkRequisition popup_req;
2033   GtkPolicyType hpolicy, vpolicy;
2034   GdkWindow *window;
2035
2036   /* under windows, the drop down list is as wide as the combo box itself.
2037      see bug #340204 */
2038   GtkWidget *widget = GTK_WIDGET (combo_box);
2039
2040   *x = *y = 0;
2041
2042   gtk_widget_get_allocation (widget, &allocation);
2043
2044   if (!gtk_widget_get_has_window (widget))
2045     {
2046       *x += allocation.x;
2047       *y += allocation.y;
2048     }
2049
2050   window = gtk_widget_get_window (widget);
2051
2052   gdk_window_get_root_coords (gtk_widget_get_window (widget),
2053                               *x, *y, x, y);
2054
2055   *width = allocation.width;
2056
2057   hpolicy = vpolicy = GTK_POLICY_NEVER;
2058   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
2059                                   hpolicy, vpolicy);
2060
2061   if (combo_box->priv->popup_fixed_width)
2062     {
2063       gtk_widget_get_preferred_size (priv->scrolled_window, &popup_req, NULL);
2064
2065       if (popup_req.width > *width)
2066         {
2067           hpolicy = GTK_POLICY_ALWAYS;
2068           gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
2069                                           hpolicy, vpolicy);
2070         }
2071     }
2072   else
2073     {
2074       /* XXX This code depends on treeviews properly reporting their natural width
2075        * list-mode menus won't fill up to their natural width until then */
2076       gtk_widget_get_preferred_size (priv->scrolled_window, NULL, &popup_req);
2077
2078       if (popup_req.width > *width)
2079         {
2080           hpolicy = GTK_POLICY_NEVER;
2081           gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
2082                                           hpolicy, vpolicy);
2083
2084           *width = popup_req.width;
2085         }
2086     }
2087
2088   *height = popup_req.height;
2089
2090   screen = gtk_widget_get_screen (GTK_WIDGET (combo_box));
2091   monitor_num = gdk_screen_get_monitor_at_window (screen, window);
2092   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
2093
2094   if (gtk_widget_get_direction (GTK_WIDGET (combo_box)) == GTK_TEXT_DIR_RTL)
2095     *x = *x + allocation.width - *width;
2096
2097   if (*x < monitor.x)
2098     *x = monitor.x;
2099   else if (*x + *width > monitor.x + monitor.width)
2100     *x = monitor.x + monitor.width - *width;
2101
2102   if (*y + allocation.height + *height <= monitor.y + monitor.height)
2103     *y += allocation.height;
2104   else if (*y - *height >= monitor.y)
2105     *y -= *height;
2106   else if (monitor.y + monitor.height - (*y + allocation.height) > *y - monitor.y)
2107     {
2108       *y += allocation.height;
2109       *height = monitor.y + monitor.height - *y;
2110     }
2111   else
2112     {
2113       *height = *y - monitor.y;
2114       *y = monitor.y;
2115     }
2116
2117   if (popup_req.height > *height)
2118     {
2119       vpolicy = GTK_POLICY_ALWAYS;
2120
2121       gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->scrolled_window),
2122                                       hpolicy, vpolicy);
2123     }
2124 }
2125
2126 static gboolean
2127 cell_layout_is_sensitive (GtkCellLayout *layout)
2128 {
2129   GList *cells, *list;
2130   gboolean sensitive;
2131
2132   cells = gtk_cell_layout_get_cells (layout);
2133
2134   sensitive = FALSE;
2135   for (list = cells; list; list = list->next)
2136     {
2137       g_object_get (list->data, "sensitive", &sensitive, NULL);
2138
2139       if (sensitive)
2140         break;
2141     }
2142   g_list_free (cells);
2143
2144   return sensitive;
2145 }
2146
2147 static gboolean
2148 cell_is_sensitive (GtkCellRenderer *cell,
2149                    gpointer         data)
2150 {
2151   gboolean *sensitive = data;
2152
2153   g_object_get (cell, "sensitive", sensitive, NULL);
2154
2155   return *sensitive;
2156 }
2157
2158 static gboolean
2159 tree_column_row_is_sensitive (GtkComboBox *combo_box,
2160                               GtkTreeIter *iter)
2161 {
2162   GtkComboBoxPrivate *priv = combo_box->priv;
2163
2164   if (priv->row_separator_func)
2165     {
2166       if (priv->row_separator_func (priv->model, iter,
2167                                     priv->row_separator_data))
2168         return FALSE;
2169     }
2170
2171   if (priv->area)
2172     {
2173       gboolean sensitive;
2174
2175       gtk_cell_area_apply_attributes (priv->area, priv->model, iter, FALSE, FALSE);
2176
2177       sensitive = FALSE;
2178
2179       gtk_cell_area_foreach (priv->area, cell_is_sensitive, &sensitive);
2180
2181       return sensitive;
2182     }
2183
2184   return TRUE;
2185 }
2186
2187 static void
2188 update_menu_sensitivity (GtkComboBox *combo_box,
2189                          GtkWidget   *menu)
2190 {
2191   GtkComboBoxPrivate *priv = combo_box->priv;
2192   GList *children, *child;
2193   GtkWidget *item, *submenu, *separator;
2194   GtkWidget *cell_view;
2195   gboolean sensitive;
2196
2197   if (!priv->model)
2198     return;
2199
2200   children = gtk_container_get_children (GTK_CONTAINER (menu));
2201
2202   for (child = children; child; child = child->next)
2203     {
2204       item = GTK_WIDGET (child->data);
2205       cell_view = gtk_bin_get_child (GTK_BIN (item));
2206
2207       if (!GTK_IS_CELL_VIEW (cell_view))
2208         continue;
2209
2210       submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (item));
2211       if (submenu != NULL)
2212         {
2213           gtk_widget_set_sensitive (item, TRUE);
2214           update_menu_sensitivity (combo_box, submenu);
2215         }
2216       else
2217         {
2218           sensitive = cell_layout_is_sensitive (GTK_CELL_LAYOUT (cell_view));
2219
2220           if (menu != priv->popup_widget && child == children)
2221             {
2222               separator = GTK_WIDGET (child->next->data);
2223               g_object_set (item, "visible", sensitive, NULL);
2224               g_object_set (separator, "visible", sensitive, NULL);
2225             }
2226           else
2227             gtk_widget_set_sensitive (item, sensitive);
2228         }
2229     }
2230
2231   g_list_free (children);
2232 }
2233
2234 static void
2235 gtk_combo_box_menu_popup (GtkComboBox *combo_box,
2236                           guint        button,
2237                           guint32      activate_time)
2238 {
2239   GtkComboBoxPrivate *priv = combo_box->priv;
2240   GtkTreePath *path;
2241   gint active_item;
2242   gint width, min_width, nat_width;
2243
2244   update_menu_sensitivity (combo_box, priv->popup_widget);
2245
2246   active_item = -1;
2247   if (gtk_tree_row_reference_valid (priv->active_row))
2248     {
2249       path = gtk_tree_row_reference_get_path (priv->active_row);
2250       active_item = gtk_tree_path_get_indices (path)[0];
2251       gtk_tree_path_free (path);
2252
2253       if (priv->add_tearoffs)
2254         active_item++;
2255     }
2256
2257   /* FIXME handle nested menus better */
2258   gtk_menu_set_active (GTK_MENU (priv->popup_widget), active_item);
2259
2260   if (priv->wrap_width == 0)
2261     {
2262       GtkAllocation allocation;
2263
2264       gtk_widget_get_allocation (GTK_WIDGET (combo_box), &allocation);
2265       width = allocation.width;
2266       gtk_widget_set_size_request (priv->popup_widget, -1, -1);
2267       gtk_widget_get_preferred_width (priv->popup_widget, &min_width, &nat_width);
2268
2269       if (combo_box->priv->popup_fixed_width)
2270         width = MAX (width, min_width);
2271       else
2272         width = MAX (width, nat_width);
2273
2274       gtk_widget_set_size_request (priv->popup_widget, width, -1);
2275     }
2276
2277   gtk_menu_popup (GTK_MENU (priv->popup_widget),
2278                   NULL, NULL,
2279                   gtk_combo_box_menu_position, combo_box,
2280                   button, activate_time);
2281 }
2282
2283 static gboolean
2284 popup_grab_on_window (GdkWindow *window,
2285                       GdkDevice *keyboard,
2286                       GdkDevice *pointer,
2287                       guint32    activate_time)
2288 {
2289   if (keyboard &&
2290       gdk_device_grab (keyboard, window,
2291                        GDK_OWNERSHIP_WINDOW, TRUE,
2292                        GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK,
2293                        NULL, activate_time) != GDK_GRAB_SUCCESS)
2294     return FALSE;
2295
2296   if (pointer &&
2297       gdk_device_grab (pointer, window,
2298                        GDK_OWNERSHIP_WINDOW, TRUE,
2299                        GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
2300                        GDK_POINTER_MOTION_MASK,
2301                        NULL, activate_time) != GDK_GRAB_SUCCESS)
2302     {
2303       if (keyboard)
2304         gdk_device_ungrab (keyboard, activate_time);
2305
2306       return FALSE;
2307     }
2308
2309   return TRUE;
2310 }
2311
2312 /**
2313  * gtk_combo_box_popup:
2314  * @combo_box: a #GtkComboBox
2315  *
2316  * Pops up the menu or dropdown list of @combo_box.
2317  *
2318  * This function is mostly intended for use by accessibility technologies;
2319  * applications should have little use for it.
2320  *
2321  * Since: 2.4
2322  */
2323 void
2324 gtk_combo_box_popup (GtkComboBox *combo_box)
2325 {
2326   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
2327
2328   g_signal_emit (combo_box, combo_box_signals[POPUP], 0);
2329 }
2330
2331 /**
2332  * gtk_combo_box_popup_for_device:
2333  * @combo_box: a #GtkComboBox
2334  * @device: a #GdkDevice
2335  *
2336  * Pops up the menu or dropdown list of @combo_box, the popup window
2337  * will be grabbed so only @device and its associated pointer/keyboard
2338  * are the only #GdkDevice<!-- -->s able to send events to it.
2339  *
2340  * Since: 3.0
2341  **/
2342 void
2343 gtk_combo_box_popup_for_device (GtkComboBox *combo_box,
2344                                 GdkDevice   *device)
2345 {
2346   GtkComboBoxPrivate *priv = combo_box->priv;
2347   gint x, y, width, height;
2348   GtkTreePath *path = NULL, *ppath;
2349   GtkWidget *toplevel;
2350   GdkDevice *keyboard, *pointer;
2351   guint32 time;
2352
2353   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
2354   g_return_if_fail (GDK_IS_DEVICE (device));
2355
2356   if (!gtk_widget_get_realized (GTK_WIDGET (combo_box)))
2357     return;
2358
2359   if (gtk_widget_get_mapped (priv->popup_widget))
2360     return;
2361
2362   if (priv->grab_pointer && priv->grab_keyboard)
2363     return;
2364
2365   time = gtk_get_current_event_time ();
2366
2367   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
2368     {
2369       keyboard = device;
2370       pointer = gdk_device_get_associated_device (device);
2371     }
2372   else
2373     {
2374       pointer = device;
2375       keyboard = gdk_device_get_associated_device (device);
2376     }
2377
2378   if (GTK_IS_MENU (priv->popup_widget))
2379     {
2380       gtk_combo_box_menu_popup (combo_box,
2381                                 priv->activate_button,
2382                                 priv->activate_time);
2383       return;
2384     }
2385
2386   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo_box));
2387   if (GTK_IS_WINDOW (toplevel))
2388     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
2389                                  GTK_WINDOW (priv->popup_window));
2390
2391   gtk_widget_show_all (priv->scrolled_window);
2392   gtk_combo_box_list_position (combo_box, &x, &y, &width, &height);
2393
2394   gtk_widget_set_size_request (priv->popup_window, width, height);
2395   gtk_window_move (GTK_WINDOW (priv->popup_window), x, y);
2396
2397   if (gtk_tree_row_reference_valid (priv->active_row))
2398     {
2399       path = gtk_tree_row_reference_get_path (priv->active_row);
2400       ppath = gtk_tree_path_copy (path);
2401       if (gtk_tree_path_up (ppath))
2402         gtk_tree_view_expand_to_path (GTK_TREE_VIEW (priv->tree_view),
2403                                       ppath);
2404       gtk_tree_path_free (ppath);
2405     }
2406   gtk_tree_view_set_hover_expand (GTK_TREE_VIEW (priv->tree_view),
2407                                   TRUE);
2408
2409   /* popup */
2410   gtk_widget_show (priv->popup_window);
2411
2412   if (path)
2413     {
2414       gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->tree_view),
2415                                 path, NULL, FALSE);
2416       gtk_tree_path_free (path);
2417     }
2418
2419   gtk_widget_grab_focus (priv->popup_window);
2420   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
2421                                 TRUE);
2422
2423   if (!gtk_widget_has_focus (priv->tree_view))
2424     gtk_widget_grab_focus (priv->tree_view);
2425
2426   if (!popup_grab_on_window (gtk_widget_get_window (priv->popup_window),
2427                              keyboard, pointer, time))
2428     {
2429       gtk_widget_hide (priv->popup_window);
2430       return;
2431     }
2432
2433   gtk_device_grab_add (priv->popup_window, pointer, TRUE);
2434   priv->grab_pointer = pointer;
2435   priv->grab_keyboard = keyboard;
2436 }
2437
2438 static void
2439 gtk_combo_box_real_popup (GtkComboBox *combo_box)
2440 {
2441   GdkDevice *device;
2442
2443   device = gtk_get_current_event_device ();
2444
2445   if (!device)
2446     {
2447       GdkDeviceManager *device_manager;
2448       GdkDisplay *display;
2449       GList *devices;
2450
2451       display = gtk_widget_get_display (GTK_WIDGET (combo_box));
2452       device_manager = gdk_display_get_device_manager (display);
2453
2454       /* No device was set, pick the first master device */
2455       devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
2456       device = devices->data;
2457       g_list_free (devices);
2458     }
2459
2460   gtk_combo_box_popup_for_device (combo_box, device);
2461 }
2462
2463 static gboolean
2464 gtk_combo_box_real_popdown (GtkComboBox *combo_box)
2465 {
2466   if (combo_box->priv->popup_shown)
2467     {
2468       gtk_combo_box_popdown (combo_box);
2469       return TRUE;
2470     }
2471
2472   return FALSE;
2473 }
2474
2475 /**
2476  * gtk_combo_box_popdown:
2477  * @combo_box: a #GtkComboBox
2478  *
2479  * Hides the menu or dropdown list of @combo_box.
2480  *
2481  * This function is mostly intended for use by accessibility technologies;
2482  * applications should have little use for it.
2483  *
2484  * Since: 2.4
2485  */
2486 void
2487 gtk_combo_box_popdown (GtkComboBox *combo_box)
2488 {
2489   GtkComboBoxPrivate *priv = combo_box->priv;
2490
2491   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
2492
2493   if (GTK_IS_MENU (priv->popup_widget))
2494     {
2495       gtk_menu_popdown (GTK_MENU (priv->popup_widget));
2496       return;
2497     }
2498
2499   if (!gtk_widget_get_realized (GTK_WIDGET (combo_box)))
2500     return;
2501
2502   gtk_device_grab_remove (priv->popup_window, priv->grab_pointer);
2503   gtk_widget_hide (priv->popup_window);
2504   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button),
2505                                 FALSE);
2506
2507   priv->grab_pointer = NULL;
2508   priv->grab_keyboard = NULL;
2509 }
2510
2511 #define GTK_COMBO_BOX_SIZE_ALLOCATE_BUTTON                                         \
2512   gtk_widget_get_preferred_size (combo_box->priv->button,                        \
2513                                  &req, NULL);                                         \
2514                                                                                   \
2515   if (is_rtl)                                                                         \
2516     child.x = allocation->x + padding.right;                                        \
2517   else                                                                                \
2518     child.x = allocation->x + allocation->width - req.width - padding.left;        \
2519                                                                                     \
2520   child.y = allocation->y + padding.top;                                                \
2521   child.width = req.width;                                                        \
2522   child.height = allocation->height - (padding.top + padding.bottom);                \
2523   child.width = MAX (1, child.width);                                                \
2524   child.height = MAX (1, child.height);                                                \
2525                                                                                   \
2526   gtk_widget_size_allocate (combo_box->priv->button, &child);
2527
2528
2529 static void
2530 gtk_combo_box_size_allocate (GtkWidget     *widget,
2531                              GtkAllocation *allocation)
2532 {
2533   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
2534   GtkComboBoxPrivate *priv = combo_box->priv;
2535   GtkWidget *child_widget;
2536   GtkAllocation child;
2537   GtkRequisition req;
2538   gboolean is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
2539   GtkBorder padding;
2540
2541   gtk_widget_set_allocation (widget, allocation);
2542   child_widget = gtk_bin_get_child (GTK_BIN (widget));
2543   get_widget_padding (widget, &padding);
2544
2545   if (!priv->tree_view)
2546     {
2547       if (priv->cell_view)
2548         {
2549           GtkBorder button_padding;
2550           gint width;
2551           guint border_width;
2552
2553           gtk_widget_size_allocate (priv->button, allocation);
2554
2555           /* menu mode */
2556           allocation->x += padding.left;
2557           allocation->y += padding.top;
2558           allocation->width -= padding.left + padding.right;
2559           allocation->height -= padding.top + padding.bottom;
2560
2561           /* set some things ready */
2562           border_width = gtk_container_get_border_width (GTK_CONTAINER (priv->button));
2563           get_widget_padding (priv->button, &button_padding);
2564
2565           child.x = allocation->x;
2566           child.y = allocation->y;
2567           width = allocation->width;
2568           child.height = allocation->height;
2569
2570           if (!priv->is_cell_renderer)
2571             {
2572               child.x += border_width + button_padding.left;
2573               child.y += border_width + button_padding.top;
2574               width -= 2 * border_width +
2575                 button_padding.left + button_padding.right;
2576               child.height -= 2 * border_width +
2577                 button_padding.top + button_padding.bottom;
2578             }
2579
2580           /* handle the children */
2581           gtk_widget_get_preferred_size (priv->arrow, &req, NULL);
2582           child.width = req.width;
2583           if (!is_rtl)
2584             child.x += width - req.width - button_padding.right;
2585           child.width = MAX (1, child.width);
2586           child.height = MAX (1, child.height);
2587           gtk_widget_size_allocate (priv->arrow, &child);
2588           if (is_rtl)
2589             child.x += req.width;
2590           gtk_widget_get_preferred_size (priv->separator, &req, NULL);
2591           child.width = req.width;
2592           if (!is_rtl)
2593             child.x -= req.width;
2594           child.width = MAX (1, child.width);
2595           child.height = MAX (1, child.height);
2596           gtk_widget_size_allocate (priv->separator, &child);
2597
2598           if (is_rtl)
2599             {
2600               child.x += req.width;
2601               child.width = allocation->x + allocation->width
2602                 - border_width - child.x;
2603             }
2604           else
2605             {
2606               child.width = child.x;
2607               child.x = allocation->x
2608                 + border_width + button_padding.left;
2609               child.width -= child.x;
2610             }
2611
2612           if (gtk_widget_get_visible (priv->popup_widget))
2613             {
2614               gint width, menu_width;
2615
2616               if (priv->wrap_width == 0)
2617                 {
2618                   GtkAllocation combo_box_allocation;
2619
2620                   gtk_widget_get_allocation (GTK_WIDGET (combo_box), &combo_box_allocation);
2621                   width = combo_box_allocation.width;
2622                   gtk_widget_set_size_request (priv->popup_widget, -1, -1);
2623
2624                   if (combo_box->priv->popup_fixed_width)
2625                     gtk_widget_get_preferred_width (priv->popup_widget, &menu_width, NULL);
2626                   else
2627                     gtk_widget_get_preferred_width (priv->popup_widget, NULL, &menu_width);
2628
2629                   gtk_widget_set_size_request (priv->popup_widget,
2630                                                MAX (width, menu_width), -1);
2631                }
2632
2633               /* reposition the menu after giving it a new width */
2634               gtk_menu_reposition (GTK_MENU (priv->popup_widget));
2635             }
2636
2637           child.width = MAX (1, child.width);
2638           child.height = MAX (1, child.height);
2639           gtk_widget_size_allocate (child_widget, &child);
2640         }
2641       else
2642         {
2643           GTK_COMBO_BOX_SIZE_ALLOCATE_BUTTON
2644
2645           if (is_rtl)
2646             child.x = allocation->x + req.width + padding.right;
2647           else
2648             child.x = allocation->x + padding.left;
2649           child.y = allocation->y + padding.top;
2650           child.width = allocation->width - req.width - (padding.left + padding.right);
2651           child.width = MAX (1, child.width);
2652           child.height = MAX (1, child.height);
2653           gtk_widget_size_allocate (child_widget, &child);
2654         }
2655     }
2656   else
2657     {
2658       /* list mode */
2659       guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
2660
2661       /* button */
2662       GTK_COMBO_BOX_SIZE_ALLOCATE_BUTTON
2663
2664       /* frame */
2665       if (is_rtl)
2666         child.x = allocation->x + req.width;
2667       else
2668         child.x = allocation->x;
2669
2670       child.y = allocation->y;
2671       child.width = allocation->width - req.width;
2672       child.height = allocation->height;
2673
2674       if (priv->cell_view_frame)
2675         {
2676           child.x += padding.left + border_width;
2677           child.y += padding.top + border_width;
2678           child.width = MAX (1, child.width - (2 * border_width) - (padding.left + padding.right));
2679           child.height = MAX (1, child.height - (2 * border_width) - (padding.top + padding.bottom));
2680           gtk_widget_size_allocate (priv->cell_view_frame, &child);
2681
2682           /* the sample */
2683           if (priv->has_frame)
2684             {
2685               GtkBorder frame_padding;
2686
2687               border_width = gtk_container_get_border_width (GTK_CONTAINER (priv->cell_view_frame));
2688               get_widget_padding (priv->cell_view_frame, &frame_padding);
2689
2690               child.x += border_width + frame_padding.left;
2691               child.y += border_width + frame_padding.right;
2692               child.width -= (2 * border_width) + frame_padding.left + frame_padding.right;
2693               child.height -= (2 * border_width) + frame_padding.top + frame_padding.bottom;
2694             }
2695         }
2696       else
2697         {
2698           child.x += padding.left + border_width;
2699           child.y += padding.top + border_width;
2700           child.width -= (2 * border_width) - (padding.left + padding.right);
2701           child.height -= (2 * border_width) - (padding.top + padding.bottom);
2702         }
2703
2704       if (gtk_widget_get_visible (priv->popup_window))
2705         {
2706           gint x, y, width, height;
2707           gtk_combo_box_list_position (combo_box, &x, &y, &width, &height);
2708           gtk_window_move (GTK_WINDOW (priv->popup_window), x, y);
2709           gtk_widget_set_size_request (priv->popup_window, width, height);
2710         }
2711
2712       child.width = MAX (1, child.width);
2713       child.height = MAX (1, child.height);
2714       gtk_widget_size_allocate (child_widget, &child);
2715     }
2716 }
2717
2718 #undef GTK_COMBO_BOX_ALLOCATE_BUTTON
2719
2720 static void
2721 gtk_combo_box_unset_model (GtkComboBox *combo_box)
2722 {
2723   GtkComboBoxPrivate *priv = combo_box->priv;
2724
2725   if (priv->model)
2726     {
2727       g_signal_handler_disconnect (priv->model,
2728                                    priv->inserted_id);
2729       g_signal_handler_disconnect (priv->model,
2730                                    priv->deleted_id);
2731       g_signal_handler_disconnect (priv->model,
2732                                    priv->reordered_id);
2733       g_signal_handler_disconnect (priv->model,
2734                                    priv->changed_id);
2735     }
2736
2737   if (priv->model)
2738     {
2739       g_object_unref (priv->model);
2740       priv->model = NULL;
2741     }
2742
2743   if (priv->active_row)
2744     {
2745       gtk_tree_row_reference_free (priv->active_row);
2746       priv->active_row = NULL;
2747     }
2748
2749   if (priv->cell_view)
2750     gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view), NULL);
2751 }
2752
2753 static void
2754 gtk_combo_box_forall (GtkContainer *container,
2755                       gboolean      include_internals,
2756                       GtkCallback   callback,
2757                       gpointer      callback_data)
2758 {
2759   GtkComboBox *combo_box = GTK_COMBO_BOX (container);
2760   GtkComboBoxPrivate *priv = combo_box->priv;
2761   GtkWidget *child;
2762
2763   if (include_internals)
2764     {
2765       if (priv->button)
2766         (* callback) (priv->button, callback_data);
2767       if (priv->cell_view_frame)
2768         (* callback) (priv->cell_view_frame, callback_data);
2769     }
2770
2771   child = gtk_bin_get_child (GTK_BIN (container));
2772   if (child)
2773     (* callback) (child, callback_data);
2774 }
2775
2776 static void
2777 gtk_combo_box_child_show (GtkWidget *widget,
2778                           GtkComboBox *combo_box)
2779 {
2780   GtkComboBoxPrivate *priv = combo_box->priv;
2781
2782   priv->popup_shown = TRUE;
2783   g_object_notify (G_OBJECT (combo_box), "popup-shown");
2784 }
2785
2786 static void
2787 gtk_combo_box_child_hide (GtkWidget *widget,
2788                           GtkComboBox *combo_box)
2789 {
2790   GtkComboBoxPrivate *priv = combo_box->priv;
2791
2792   priv->popup_shown = FALSE;
2793   g_object_notify (G_OBJECT (combo_box), "popup-shown");
2794 }
2795
2796 static gboolean
2797 gtk_combo_box_draw (GtkWidget *widget,
2798                     cairo_t   *cr)
2799 {
2800   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
2801   GtkComboBoxPrivate *priv = combo_box->priv;
2802
2803   if (priv->shadow_type != GTK_SHADOW_NONE)
2804     {
2805       GtkStyleContext *context;
2806
2807       context = gtk_widget_get_style_context (widget);
2808
2809       gtk_render_background (context, cr, 0, 0,
2810                              gtk_widget_get_allocated_width (widget),
2811                              gtk_widget_get_allocated_height (widget));
2812       gtk_render_frame (context, cr, 0, 0,
2813                         gtk_widget_get_allocated_width (widget),
2814                         gtk_widget_get_allocated_height (widget));
2815     }
2816
2817   gtk_container_propagate_draw (GTK_CONTAINER (widget),
2818                                 priv->button, cr);
2819
2820   if (priv->tree_view && priv->cell_view_frame)
2821     {
2822       gtk_container_propagate_draw (GTK_CONTAINER (widget),
2823                                     priv->cell_view_frame, cr);
2824     }
2825
2826   gtk_container_propagate_draw (GTK_CONTAINER (widget),
2827                                 gtk_bin_get_child (GTK_BIN (widget)),
2828                                 cr);
2829
2830   return FALSE;
2831 }
2832
2833 typedef struct {
2834   GtkComboBox *combo;
2835   GtkTreePath *path;
2836   GtkTreeIter iter;
2837   gboolean found;
2838   gboolean set;
2839   gboolean visible;
2840 } SearchData;
2841
2842 static gboolean
2843 path_visible (GtkTreeView *view,
2844               GtkTreePath *path)
2845 {
2846   GtkRBTree *tree;
2847   GtkRBNode *node;
2848
2849   /* Note that we rely on the fact that collapsed rows don't have nodes
2850    */
2851   return _gtk_tree_view_find_node (view, path, &tree, &node);
2852 }
2853
2854 static gboolean
2855 tree_next_func (GtkTreeModel *model,
2856                 GtkTreePath  *path,
2857                 GtkTreeIter  *iter,
2858                 gpointer      data)
2859 {
2860   SearchData *search_data = (SearchData *)data;
2861
2862   if (search_data->found)
2863     {
2864       if (!tree_column_row_is_sensitive (search_data->combo, iter))
2865         return FALSE;
2866
2867       if (search_data->visible &&
2868           !path_visible (GTK_TREE_VIEW (search_data->combo->priv->tree_view), path))
2869         return FALSE;
2870
2871       search_data->set = TRUE;
2872       search_data->iter = *iter;
2873
2874       return TRUE;
2875     }
2876
2877   if (gtk_tree_path_compare (path, search_data->path) == 0)
2878     search_data->found = TRUE;
2879
2880   return FALSE;
2881 }
2882
2883 static gboolean
2884 tree_next (GtkComboBox  *combo,
2885            GtkTreeModel *model,
2886            GtkTreeIter  *iter,
2887            GtkTreeIter  *next,
2888            gboolean      visible)
2889 {
2890   SearchData search_data;
2891
2892   search_data.combo = combo;
2893   search_data.path = gtk_tree_model_get_path (model, iter);
2894   search_data.visible = visible;
2895   search_data.found = FALSE;
2896   search_data.set = FALSE;
2897
2898   gtk_tree_model_foreach (model, tree_next_func, &search_data);
2899
2900   *next = search_data.iter;
2901
2902   gtk_tree_path_free (search_data.path);
2903
2904   return search_data.set;
2905 }
2906
2907 static gboolean
2908 tree_prev_func (GtkTreeModel *model,
2909                 GtkTreePath  *path,
2910                 GtkTreeIter  *iter,
2911                 gpointer      data)
2912 {
2913   SearchData *search_data = (SearchData *)data;
2914
2915   if (gtk_tree_path_compare (path, search_data->path) == 0)
2916     {
2917       search_data->found = TRUE;
2918       return TRUE;
2919     }
2920
2921   if (!tree_column_row_is_sensitive (search_data->combo, iter))
2922     return FALSE;
2923
2924   if (search_data->visible &&
2925       !path_visible (GTK_TREE_VIEW (search_data->combo->priv->tree_view), path))
2926     return FALSE;
2927
2928   search_data->set = TRUE;
2929   search_data->iter = *iter;
2930
2931   return FALSE;
2932 }
2933
2934 static gboolean
2935 tree_prev (GtkComboBox  *combo,
2936            GtkTreeModel *model,
2937            GtkTreeIter  *iter,
2938            GtkTreeIter  *prev,
2939            gboolean      visible)
2940 {
2941   SearchData search_data;
2942
2943   search_data.combo = combo;
2944   search_data.path = gtk_tree_model_get_path (model, iter);
2945   search_data.visible = visible;
2946   search_data.found = FALSE;
2947   search_data.set = FALSE;
2948
2949   gtk_tree_model_foreach (model, tree_prev_func, &search_data);
2950
2951   *prev = search_data.iter;
2952
2953   gtk_tree_path_free (search_data.path);
2954
2955   return search_data.set;
2956 }
2957
2958 static gboolean
2959 tree_last_func (GtkTreeModel *model,
2960                 GtkTreePath  *path,
2961                 GtkTreeIter  *iter,
2962                 gpointer      data)
2963 {
2964   SearchData *search_data = (SearchData *)data;
2965
2966   if (!tree_column_row_is_sensitive (search_data->combo, iter))
2967     return FALSE;
2968
2969   /* Note that we rely on the fact that collapsed rows don't have nodes
2970    */
2971   if (search_data->visible &&
2972       !path_visible (GTK_TREE_VIEW (search_data->combo->priv->tree_view), path))
2973     return FALSE;
2974
2975   search_data->set = TRUE;
2976   search_data->iter = *iter;
2977
2978   return FALSE;
2979 }
2980
2981 static gboolean
2982 tree_last (GtkComboBox  *combo,
2983            GtkTreeModel *model,
2984            GtkTreeIter  *last,
2985            gboolean      visible)
2986 {
2987   SearchData search_data;
2988
2989   search_data.combo = combo;
2990   search_data.visible = visible;
2991   search_data.set = FALSE;
2992
2993   gtk_tree_model_foreach (model, tree_last_func, &search_data);
2994
2995   *last = search_data.iter;
2996
2997   return search_data.set;
2998 }
2999
3000
3001 static gboolean
3002 tree_first_func (GtkTreeModel *model,
3003                  GtkTreePath  *path,
3004                  GtkTreeIter  *iter,
3005                  gpointer      data)
3006 {
3007   SearchData *search_data = (SearchData *)data;
3008
3009   if (!tree_column_row_is_sensitive (search_data->combo, iter))
3010     return FALSE;
3011
3012   if (search_data->visible &&
3013       !path_visible (GTK_TREE_VIEW (search_data->combo->priv->tree_view), path))
3014     return FALSE;
3015
3016   search_data->set = TRUE;
3017   search_data->iter = *iter;
3018
3019   return TRUE;
3020 }
3021
3022 static gboolean
3023 tree_first (GtkComboBox  *combo,
3024             GtkTreeModel *model,
3025             GtkTreeIter  *first,
3026             gboolean      visible)
3027 {
3028   SearchData search_data;
3029
3030   search_data.combo = combo;
3031   search_data.visible = visible;
3032   search_data.set = FALSE;
3033
3034   gtk_tree_model_foreach (model, tree_first_func, &search_data);
3035
3036   *first = search_data.iter;
3037
3038   return search_data.set;
3039 }
3040
3041 static gboolean
3042 gtk_combo_box_scroll_event (GtkWidget          *widget,
3043                             GdkEventScroll     *event)
3044 {
3045   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
3046   gboolean found;
3047   GtkTreeIter iter;
3048   GtkTreeIter new_iter;
3049
3050   if (!gtk_combo_box_get_active_iter (combo_box, &iter))
3051     return TRUE;
3052
3053   if (event->direction == GDK_SCROLL_UP)
3054     found = tree_prev (combo_box, combo_box->priv->model,
3055                        &iter, &new_iter, FALSE);
3056   else
3057     found = tree_next (combo_box, combo_box->priv->model,
3058                        &iter, &new_iter, FALSE);
3059
3060   if (found)
3061     gtk_combo_box_set_active_iter (combo_box, &new_iter);
3062
3063   return TRUE;
3064 }
3065
3066 /*
3067  * menu style
3068  */
3069 static gboolean
3070 gtk_combo_box_row_separator_func (GtkTreeModel      *model,
3071                                   GtkTreeIter       *iter,
3072                                   GtkComboBox       *combo)
3073 {
3074   GtkComboBoxPrivate *priv = combo->priv;
3075
3076   if (priv->row_separator_func)
3077     return priv->row_separator_func (model, iter, priv->row_separator_data);
3078
3079   return FALSE;
3080 }
3081
3082 static gboolean
3083 gtk_combo_box_header_func (GtkTreeModel      *model,
3084                            GtkTreeIter       *iter,
3085                            GtkComboBox       *combo)
3086 {
3087   /* Every submenu has a selectable header, however we
3088    * can expose a method to make that configurable by
3089    * the user (like row_separator_func is done) */
3090   return TRUE;
3091 }
3092
3093 static void
3094 gtk_combo_box_menu_setup (GtkComboBox *combo_box,
3095                           gboolean     add_children)
3096 {
3097   GtkComboBoxPrivate *priv = combo_box->priv;
3098   GtkWidget *child;
3099   GtkWidget *menu;
3100
3101   child = gtk_bin_get_child (GTK_BIN (combo_box));
3102
3103   if (priv->cell_view)
3104     {
3105       priv->button = gtk_toggle_button_new ();
3106       gtk_button_set_focus_on_click (GTK_BUTTON (priv->button),
3107                                      priv->focus_on_click);
3108
3109       g_signal_connect (priv->button, "toggled",
3110                         G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
3111       gtk_widget_set_parent (priv->button,
3112                              gtk_widget_get_parent (child));
3113
3114       priv->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
3115       gtk_container_add (GTK_CONTAINER (priv->button), priv->box);
3116
3117       priv->separator = gtk_separator_new (GTK_ORIENTATION_VERTICAL);
3118       gtk_container_add (GTK_CONTAINER (priv->box), priv->separator);
3119
3120       priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
3121       gtk_container_add (GTK_CONTAINER (priv->box), priv->arrow);
3122
3123       gtk_widget_show_all (priv->button);
3124     }
3125   else
3126     {
3127       priv->button = gtk_toggle_button_new ();
3128       gtk_button_set_focus_on_click (GTK_BUTTON (priv->button),
3129                                      priv->focus_on_click);
3130
3131       g_signal_connect (priv->button, "toggled",
3132                         G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
3133       gtk_widget_set_parent (priv->button,
3134                              gtk_widget_get_parent (child));
3135
3136       priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
3137       gtk_container_add (GTK_CONTAINER (priv->button), priv->arrow);
3138       gtk_widget_show_all (priv->button);
3139     }
3140
3141   g_signal_connect (priv->button, "button-press-event",
3142                     G_CALLBACK (gtk_combo_box_menu_button_press),
3143                     combo_box);
3144   g_signal_connect (priv->button, "state-flags-changed",
3145                     G_CALLBACK (gtk_combo_box_button_state_flags_changed),
3146                     combo_box);
3147
3148   /* create our funky menu */
3149   menu = _gtk_tree_menu_new_with_area (priv->area);
3150   gtk_widget_set_name (menu, "gtk-combobox-popup-menu");
3151
3152   _gtk_tree_menu_set_model (GTK_TREE_MENU (menu), priv->model);
3153
3154   _gtk_tree_menu_set_wrap_width (GTK_TREE_MENU (menu), priv->wrap_width);
3155   _gtk_tree_menu_set_row_span_column (GTK_TREE_MENU (menu), priv->row_column);
3156   _gtk_tree_menu_set_column_span_column (GTK_TREE_MENU (menu), priv->col_column);
3157   _gtk_tree_menu_set_tearoff (GTK_TREE_MENU (menu),
3158                               combo_box->priv->add_tearoffs);
3159
3160   g_signal_connect (menu, "menu-activate",
3161                     G_CALLBACK (gtk_combo_box_menu_activate), combo_box);
3162
3163   /* Chain our row_separator_func through */
3164   _gtk_tree_menu_set_row_separator_func (GTK_TREE_MENU (menu),
3165                                          (GtkTreeViewRowSeparatorFunc)gtk_combo_box_row_separator_func,
3166                                          combo_box, NULL);
3167
3168   _gtk_tree_menu_set_header_func (GTK_TREE_MENU (menu),
3169                                   (GtkTreeMenuHeaderFunc)gtk_combo_box_header_func,
3170                                   combo_box, NULL);
3171
3172   g_signal_connect (menu, "key-press-event",
3173                     G_CALLBACK (gtk_combo_box_menu_key_press), combo_box);
3174   gtk_combo_box_set_popup_widget (combo_box, menu);
3175
3176   gtk_combo_box_update_title (combo_box);
3177 }
3178
3179 static void
3180 gtk_combo_box_menu_destroy (GtkComboBox *combo_box)
3181 {
3182   GtkComboBoxPrivate *priv = combo_box->priv;
3183
3184   g_signal_handlers_disconnect_matched (priv->button,
3185                                         G_SIGNAL_MATCH_DATA,
3186                                         0, 0, NULL,
3187                                         gtk_combo_box_menu_button_press, NULL);
3188   g_signal_handlers_disconnect_matched (priv->button,
3189                                         G_SIGNAL_MATCH_DATA,
3190                                         0, 0, NULL,
3191                                         gtk_combo_box_button_state_flags_changed, combo_box);
3192   g_signal_handlers_disconnect_matched (priv->popup_widget,
3193                                         G_SIGNAL_MATCH_DATA,
3194                                         0, 0, NULL,
3195                                         gtk_combo_box_menu_activate, combo_box);
3196
3197   /* unparent will remove our latest ref */
3198   gtk_widget_unparent (priv->button);
3199
3200   priv->box = NULL;
3201   priv->button = NULL;
3202   priv->arrow = NULL;
3203   priv->separator = NULL;
3204
3205   /* changing the popup window will unref the menu and the children */
3206 }
3207
3208 /* callbacks */
3209 static gboolean
3210 gtk_combo_box_menu_button_press (GtkWidget      *widget,
3211                                  GdkEventButton *event,
3212                                  gpointer        user_data)
3213 {
3214   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3215   GtkComboBoxPrivate *priv = combo_box->priv;
3216
3217   if (GTK_IS_MENU (priv->popup_widget) &&
3218       event->type == GDK_BUTTON_PRESS && event->button == GDK_BUTTON_PRIMARY)
3219     {
3220       if (priv->focus_on_click &&
3221           !gtk_widget_has_focus (priv->button))
3222         gtk_widget_grab_focus (priv->button);
3223
3224       gtk_combo_box_menu_popup (combo_box, event->button, event->time);
3225
3226       return TRUE;
3227     }
3228
3229   return FALSE;
3230 }
3231
3232 static void
3233 gtk_combo_box_menu_activate (GtkWidget   *menu,
3234                              const gchar *path,
3235                              GtkComboBox *combo_box)
3236 {
3237   GtkTreeIter iter;
3238
3239   if (gtk_tree_model_get_iter_from_string (combo_box->priv->model, &iter, path))
3240     gtk_combo_box_set_active_iter (combo_box, &iter);
3241
3242   g_object_set (combo_box,
3243                 "editing-canceled", FALSE,
3244                 NULL);
3245 }
3246
3247
3248 static void
3249 gtk_combo_box_update_sensitivity (GtkComboBox *combo_box)
3250 {
3251   GtkTreeIter iter;
3252   gboolean sensitive = TRUE; /* fool code checkers */
3253
3254   if (!combo_box->priv->button)
3255     return;
3256
3257   switch (combo_box->priv->button_sensitivity)
3258     {
3259       case GTK_SENSITIVITY_ON:
3260         sensitive = TRUE;
3261         break;
3262       case GTK_SENSITIVITY_OFF:
3263         sensitive = FALSE;
3264         break;
3265       case GTK_SENSITIVITY_AUTO:
3266         sensitive = combo_box->priv->model &&
3267                     gtk_tree_model_get_iter_first (combo_box->priv->model, &iter);
3268         break;
3269       default:
3270         g_assert_not_reached ();
3271         break;
3272     }
3273
3274   gtk_widget_set_sensitive (combo_box->priv->button, sensitive);
3275
3276   /* In list-mode, we also need to update sensitivity of the event box */
3277   if (GTK_IS_TREE_VIEW (combo_box->priv->tree_view)
3278       && combo_box->priv->cell_view)
3279     gtk_widget_set_sensitive (combo_box->priv->box, sensitive);
3280 }
3281
3282 static void
3283 gtk_combo_box_model_row_inserted (GtkTreeModel     *model,
3284                                   GtkTreePath      *path,
3285                                   GtkTreeIter      *iter,
3286                                   gpointer          user_data)
3287 {
3288   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3289
3290   if (combo_box->priv->tree_view)
3291     gtk_combo_box_list_popup_resize (combo_box);
3292
3293   gtk_combo_box_update_sensitivity (combo_box);
3294 }
3295
3296 static void
3297 gtk_combo_box_model_row_deleted (GtkTreeModel     *model,
3298                                  GtkTreePath      *path,
3299                                  gpointer          user_data)
3300 {
3301   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3302   GtkComboBoxPrivate *priv = combo_box->priv;
3303
3304   if (!gtk_tree_row_reference_valid (priv->active_row))
3305     {
3306       if (priv->cell_view)
3307         gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view), NULL);
3308       g_signal_emit (combo_box, combo_box_signals[CHANGED], 0);
3309     }
3310
3311   if (priv->tree_view)
3312     gtk_combo_box_list_popup_resize (combo_box);
3313
3314   gtk_combo_box_update_sensitivity (combo_box);
3315 }
3316
3317 static void
3318 gtk_combo_box_model_rows_reordered (GtkTreeModel    *model,
3319                                     GtkTreePath     *path,
3320                                     GtkTreeIter     *iter,
3321                                     gint            *new_order,
3322                                     gpointer         user_data)
3323 {
3324   gtk_tree_row_reference_reordered (G_OBJECT (user_data), path, iter, new_order);
3325 }
3326
3327 static void
3328 gtk_combo_box_model_row_changed (GtkTreeModel     *model,
3329                                  GtkTreePath      *path,
3330                                  GtkTreeIter      *iter,
3331                                  gpointer          user_data)
3332 {
3333   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3334   GtkComboBoxPrivate *priv = combo_box->priv;
3335   GtkTreePath *active_path;
3336
3337   /* FIXME this belongs to GtkCellView */
3338   if (gtk_tree_row_reference_valid (priv->active_row))
3339     {
3340       active_path = gtk_tree_row_reference_get_path (priv->active_row);
3341       if (gtk_tree_path_compare (path, active_path) == 0 &&
3342           priv->cell_view)
3343         gtk_widget_queue_resize (GTK_WIDGET (priv->cell_view));
3344       gtk_tree_path_free (active_path);
3345     }
3346
3347   if (priv->tree_view)
3348     gtk_combo_box_list_row_changed (model, path, iter, user_data);
3349 }
3350
3351 static gboolean
3352 list_popup_resize_idle (gpointer user_data)
3353 {
3354   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3355   GtkComboBoxPrivate *priv = combo_box->priv;
3356   gint x, y, width, height;
3357
3358   if (priv->tree_view && gtk_widget_get_mapped (priv->popup_window))
3359     {
3360       gtk_combo_box_list_position (combo_box, &x, &y, &width, &height);
3361
3362       gtk_widget_set_size_request (priv->popup_window, width, height);
3363       gtk_window_move (GTK_WINDOW (priv->popup_window), x, y);
3364     }
3365
3366   priv->resize_idle_id = 0;
3367
3368   return FALSE;
3369 }
3370
3371 static void
3372 gtk_combo_box_list_popup_resize (GtkComboBox *combo_box)
3373 {
3374   GtkComboBoxPrivate *priv = combo_box->priv;
3375
3376   if (!priv->resize_idle_id)
3377     priv->resize_idle_id =
3378       gdk_threads_add_idle (list_popup_resize_idle, combo_box);
3379 }
3380
3381 static void
3382 gtk_combo_box_model_row_expanded (GtkTreeModel     *model,
3383                                   GtkTreePath      *path,
3384                                   GtkTreeIter      *iter,
3385                                   gpointer          user_data)
3386 {
3387   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
3388
3389   gtk_combo_box_list_popup_resize (combo_box);
3390 }
3391
3392
3393 /*
3394  * list style
3395  */
3396
3397 static void
3398 gtk_combo_box_list_setup (GtkComboBox *combo_box)
3399 {
3400   GtkComboBoxPrivate *priv = combo_box->priv;
3401   GtkTreeSelection *sel;
3402   GtkWidget *child;
3403   GtkWidget *widget = GTK_WIDGET (combo_box);
3404
3405   priv->button = gtk_toggle_button_new ();
3406   child = gtk_bin_get_child (GTK_BIN (combo_box));
3407   gtk_widget_set_parent (priv->button,
3408                          gtk_widget_get_parent (child));
3409   g_signal_connect (priv->button, "button-press-event",
3410                     G_CALLBACK (gtk_combo_box_list_button_pressed), combo_box);
3411   g_signal_connect (priv->button, "toggled",
3412                     G_CALLBACK (gtk_combo_box_button_toggled), combo_box);
3413
3414   priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
3415   gtk_container_add (GTK_CONTAINER (priv->button), priv->arrow);
3416   priv->separator = NULL;
3417   gtk_widget_show_all (priv->button);
3418
3419   if (priv->cell_view)
3420     {
3421       GtkStyleContext *context;
3422       GtkStateFlags state;
3423       GdkRGBA color;
3424
3425       context  = gtk_widget_get_style_context (widget);
3426       state = gtk_widget_get_state_flags (widget);
3427       gtk_style_context_get_background_color (context, state, &color);
3428
3429       gtk_cell_view_set_background_rgba (GTK_CELL_VIEW (priv->cell_view), &color);
3430
3431       priv->box = gtk_event_box_new ();
3432       gtk_event_box_set_visible_window (GTK_EVENT_BOX (priv->box),
3433                                         FALSE);
3434
3435       if (priv->has_frame)
3436         {
3437           priv->cell_view_frame = gtk_frame_new (NULL);
3438           gtk_frame_set_shadow_type (GTK_FRAME (priv->cell_view_frame),
3439                                      GTK_SHADOW_IN);
3440         }
3441       else
3442         {
3443           combo_box->priv->cell_view_frame = gtk_event_box_new ();
3444           gtk_event_box_set_visible_window (GTK_EVENT_BOX (combo_box->priv->cell_view_frame),
3445                                             FALSE);
3446         }
3447
3448       gtk_widget_set_parent (priv->cell_view_frame,
3449                              gtk_widget_get_parent (child));
3450       gtk_container_add (GTK_CONTAINER (priv->cell_view_frame), priv->box);
3451       gtk_widget_show_all (priv->cell_view_frame);
3452
3453       g_signal_connect (priv->box, "button-press-event",
3454                         G_CALLBACK (gtk_combo_box_list_button_pressed),
3455                         combo_box);
3456     }
3457
3458   priv->tree_view = gtk_tree_view_new ();
3459   sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
3460   gtk_tree_selection_set_mode (sel, GTK_SELECTION_BROWSE);
3461   gtk_tree_selection_set_select_function (sel,
3462                                           gtk_combo_box_list_select_func,
3463                                           NULL, NULL);
3464   gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view),
3465                                      FALSE);
3466   gtk_tree_view_set_hover_selection (GTK_TREE_VIEW (priv->tree_view),
3467                                      TRUE);
3468
3469   gtk_tree_view_set_row_separator_func (GTK_TREE_VIEW (priv->tree_view),
3470                                         (GtkTreeViewRowSeparatorFunc)gtk_combo_box_row_separator_func,
3471                                         combo_box, NULL);
3472
3473   if (priv->model)
3474     gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), priv->model);
3475
3476   gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree_view),
3477                                gtk_tree_view_column_new_with_area (priv->area));
3478
3479   if (gtk_tree_row_reference_valid (priv->active_row))
3480     {
3481       GtkTreePath *path;
3482
3483       path = gtk_tree_row_reference_get_path (priv->active_row);
3484       gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->tree_view),
3485                                 path, NULL, FALSE);
3486       gtk_tree_path_free (path);
3487     }
3488
3489   /* set sample/popup widgets */
3490   gtk_combo_box_set_popup_widget (combo_box, priv->tree_view);
3491
3492   g_signal_connect (priv->tree_view, "key-press-event",
3493                     G_CALLBACK (gtk_combo_box_list_key_press),
3494                     combo_box);
3495   g_signal_connect (priv->tree_view, "enter-notify-event",
3496                     G_CALLBACK (gtk_combo_box_list_enter_notify),
3497                     combo_box);
3498   g_signal_connect (priv->tree_view, "row-expanded",
3499                     G_CALLBACK (gtk_combo_box_model_row_expanded),
3500                     combo_box);
3501   g_signal_connect (priv->tree_view, "row-collapsed",
3502                     G_CALLBACK (gtk_combo_box_model_row_expanded),
3503                     combo_box);
3504   g_signal_connect (priv->popup_window, "button-press-event",
3505                     G_CALLBACK (gtk_combo_box_list_button_pressed),
3506                     combo_box);
3507   g_signal_connect (priv->popup_window, "button-release-event",
3508                     G_CALLBACK (gtk_combo_box_list_button_released),
3509                     combo_box);
3510
3511   gtk_widget_show (priv->tree_view);
3512
3513   gtk_combo_box_update_sensitivity (combo_box);
3514 }
3515
3516 static void
3517 gtk_combo_box_list_destroy (GtkComboBox *combo_box)
3518 {
3519   GtkComboBoxPrivate *priv = combo_box->priv;
3520
3521   /* disconnect signals */
3522   g_signal_handlers_disconnect_matched (priv->tree_view,
3523                                         G_SIGNAL_MATCH_DATA,
3524                                         0, 0, NULL, NULL, combo_box);
3525   g_signal_handlers_disconnect_matched (priv->button,
3526                                         G_SIGNAL_MATCH_DATA,
3527                                         0, 0, NULL,
3528                                         gtk_combo_box_list_button_pressed,
3529                                         NULL);
3530   g_signal_handlers_disconnect_matched (priv->popup_window,
3531                                         G_SIGNAL_MATCH_DATA,
3532                                         0, 0, NULL,
3533                                         gtk_combo_box_list_button_pressed,
3534                                         NULL);
3535   g_signal_handlers_disconnect_matched (priv->popup_window,
3536                                         G_SIGNAL_MATCH_DATA,
3537                                         0, 0, NULL,
3538                                         gtk_combo_box_list_button_released,
3539                                         NULL);
3540
3541   g_signal_handlers_disconnect_matched (priv->popup_window,
3542                                         G_SIGNAL_MATCH_DATA,
3543                                         0, 0, NULL,
3544                                         gtk_combo_box_child_show,
3545                                         NULL);
3546
3547   g_signal_handlers_disconnect_matched (priv->popup_window,
3548                                         G_SIGNAL_MATCH_DATA,
3549                                         0, 0, NULL,
3550                                         gtk_combo_box_child_hide,
3551                                         NULL);
3552
3553   if (priv->box)
3554     g_signal_handlers_disconnect_matched (priv->box,
3555                                           G_SIGNAL_MATCH_DATA,
3556                                           0, 0, NULL,
3557                                           gtk_combo_box_list_button_pressed,
3558                                           NULL);
3559
3560   /* destroy things (unparent will kill the latest ref from us)
3561    * last unref on button will destroy the arrow
3562    */
3563   gtk_widget_unparent (priv->button);
3564   priv->button = NULL;
3565   priv->arrow = NULL;
3566
3567   if (priv->cell_view)
3568     {
3569       g_object_set (priv->cell_view,
3570                     "background-set", FALSE,
3571                     NULL);
3572     }
3573
3574   if (priv->cell_view_frame)
3575     {
3576       gtk_widget_unparent (priv->cell_view_frame);
3577       priv->cell_view_frame = NULL;
3578       priv->box = NULL;
3579     }
3580
3581   if (priv->scroll_timer)
3582     {
3583       g_source_remove (priv->scroll_timer);
3584       priv->scroll_timer = 0;
3585     }
3586
3587   if (priv->resize_idle_id)
3588     {
3589       g_source_remove (priv->resize_idle_id);
3590       priv->resize_idle_id = 0;
3591     }
3592
3593   gtk_widget_destroy (priv->tree_view);
3594
3595   priv->tree_view = NULL;
3596   if (priv->popup_widget)
3597     {
3598       g_object_unref (priv->popup_widget);
3599       priv->popup_widget = NULL;
3600     }
3601 }
3602
3603 /* callbacks */
3604
3605 static gboolean
3606 gtk_combo_box_list_button_pressed (GtkWidget      *widget,
3607                                    GdkEventButton *event,
3608                                    gpointer        data)
3609 {
3610   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3611   GtkComboBoxPrivate *priv = combo_box->priv;
3612
3613   GtkWidget *ewidget = gtk_get_event_widget ((GdkEvent *)event);
3614
3615   if (ewidget == priv->popup_window)
3616     return TRUE;
3617
3618   if ((ewidget != priv->button && ewidget != priv->box) ||
3619       gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->button)))
3620     return FALSE;
3621
3622   if (priv->focus_on_click &&
3623       !gtk_widget_has_focus (priv->button))
3624     gtk_widget_grab_focus (priv->button);
3625
3626   gtk_combo_box_popup_for_device (combo_box, event->device);
3627
3628   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->button), TRUE);
3629
3630   priv->auto_scroll = FALSE;
3631   if (priv->scroll_timer == 0)
3632     priv->scroll_timer = gdk_threads_add_timeout (SCROLL_TIME,
3633                                                   (GSourceFunc) gtk_combo_box_list_scroll_timeout,
3634                                                    combo_box);
3635
3636   priv->popup_in_progress = TRUE;
3637
3638   return TRUE;
3639 }
3640
3641 static gboolean
3642 gtk_combo_box_list_button_released (GtkWidget      *widget,
3643                                     GdkEventButton *event,
3644                                     gpointer        data)
3645 {
3646   gboolean ret;
3647   GtkTreePath *path = NULL;
3648   GtkTreeIter iter;
3649
3650   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3651   GtkComboBoxPrivate *priv = combo_box->priv;
3652
3653   gboolean popup_in_progress = FALSE;
3654
3655   GtkWidget *ewidget = gtk_get_event_widget ((GdkEvent *)event);
3656
3657   if (priv->popup_in_progress)
3658     {
3659       popup_in_progress = TRUE;
3660       priv->popup_in_progress = FALSE;
3661     }
3662
3663   gtk_tree_view_set_hover_expand (GTK_TREE_VIEW (priv->tree_view),
3664                                   FALSE);
3665   if (priv->scroll_timer)
3666     {
3667       g_source_remove (priv->scroll_timer);
3668       priv->scroll_timer = 0;
3669     }
3670
3671   if (ewidget != priv->tree_view)
3672     {
3673       if ((ewidget == priv->button ||
3674            ewidget == priv->box) &&
3675           !popup_in_progress &&
3676           gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->button)))
3677         {
3678           gtk_combo_box_popdown (combo_box);
3679           return TRUE;
3680         }
3681
3682       /* released outside treeview */
3683       if (ewidget != priv->button && ewidget != priv->box)
3684         {
3685           gtk_combo_box_popdown (combo_box);
3686
3687           return TRUE;
3688         }
3689
3690       return FALSE;
3691     }
3692
3693   /* select something cool */
3694   ret = gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
3695                                        event->x, event->y,
3696                                        &path,
3697                                        NULL, NULL, NULL);
3698
3699   if (!ret)
3700     return TRUE; /* clicked outside window? */
3701
3702   gtk_tree_model_get_iter (priv->model, &iter, path);
3703   gtk_tree_path_free (path);
3704
3705   gtk_combo_box_popdown (combo_box);
3706
3707   if (tree_column_row_is_sensitive (combo_box, &iter))
3708     gtk_combo_box_set_active_iter (combo_box, &iter);
3709
3710   return TRUE;
3711 }
3712
3713 static gboolean
3714 gtk_combo_box_menu_key_press (GtkWidget   *widget,
3715                               GdkEventKey *event,
3716                               gpointer     data)
3717 {
3718   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3719
3720   if (!gtk_bindings_activate_event (G_OBJECT (widget), event))
3721     {
3722       /* The menu hasn't managed the
3723        * event, forward it to the combobox
3724        */
3725       gtk_bindings_activate_event (G_OBJECT (combo_box), event);
3726     }
3727
3728   return TRUE;
3729 }
3730
3731 static gboolean
3732 gtk_combo_box_list_key_press (GtkWidget   *widget,
3733                               GdkEventKey *event,
3734                               gpointer     data)
3735 {
3736   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3737   GtkTreeIter iter;
3738
3739   if (event->keyval == GDK_KEY_Return || event->keyval == GDK_KEY_ISO_Enter || event->keyval == GDK_KEY_KP_Enter ||
3740       event->keyval == GDK_KEY_space || event->keyval == GDK_KEY_KP_Space)
3741   {
3742     GtkTreeModel *model = NULL;
3743
3744     gtk_combo_box_popdown (combo_box);
3745
3746     if (combo_box->priv->model)
3747       {
3748         GtkTreeSelection *sel;
3749
3750         sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (combo_box->priv->tree_view));
3751
3752         if (gtk_tree_selection_get_selected (sel, &model, &iter))
3753           gtk_combo_box_set_active_iter (combo_box, &iter);
3754       }
3755
3756     return TRUE;
3757   }
3758
3759   if (!gtk_bindings_activate_event (G_OBJECT (widget), event))
3760     {
3761       /* The list hasn't managed the
3762        * event, forward it to the combobox
3763        */
3764       gtk_bindings_activate_event (G_OBJECT (combo_box), event);
3765     }
3766
3767   return TRUE;
3768 }
3769
3770 static void
3771 gtk_combo_box_list_auto_scroll (GtkComboBox *combo_box,
3772                                 gint         x,
3773                                 gint         y)
3774 {
3775   GtkAdjustment *adj;
3776   GtkAllocation allocation;
3777   GtkWidget *tree_view = combo_box->priv->tree_view;
3778   gdouble value;
3779
3780   gtk_widget_get_allocation (tree_view, &allocation);
3781
3782   adj = gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (combo_box->priv->scrolled_window));
3783   if (adj && gtk_adjustment_get_upper (adj) - gtk_adjustment_get_lower (adj) > gtk_adjustment_get_page_size (adj))
3784     {
3785       if (x <= allocation.x &&
3786           gtk_adjustment_get_lower (adj) < gtk_adjustment_get_value (adj))
3787         {
3788           value = gtk_adjustment_get_value (adj) - (allocation.x - x + 1);
3789           gtk_adjustment_set_value (adj, value);
3790         }
3791       else if (x >= allocation.x + allocation.width &&
3792                gtk_adjustment_get_upper (adj) - gtk_adjustment_get_page_size (adj) > gtk_adjustment_get_value (adj))
3793         {
3794           value = gtk_adjustment_get_value (adj) + (x - allocation.x - allocation.width + 1);
3795           gtk_adjustment_set_value (adj, MAX (value, 0.0));
3796         }
3797     }
3798
3799   adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (combo_box->priv->scrolled_window));
3800   if (adj && gtk_adjustment_get_upper (adj) - gtk_adjustment_get_lower (adj) > gtk_adjustment_get_page_size (adj))
3801     {
3802       if (y <= allocation.y &&
3803           gtk_adjustment_get_lower (adj) < gtk_adjustment_get_value (adj))
3804         {
3805           value = gtk_adjustment_get_value (adj) - (allocation.y - y + 1);
3806           gtk_adjustment_set_value (adj, value);
3807         }
3808       else if (y >= allocation.height &&
3809                gtk_adjustment_get_upper (adj) - gtk_adjustment_get_page_size (adj) > gtk_adjustment_get_value (adj))
3810         {
3811           value = gtk_adjustment_get_value (adj) + (y - allocation.height + 1);
3812           gtk_adjustment_set_value (adj, MAX (value, 0.0));
3813         }
3814     }
3815 }
3816
3817 static gboolean
3818 gtk_combo_box_list_scroll_timeout (GtkComboBox *combo_box)
3819 {
3820   GtkComboBoxPrivate *priv = combo_box->priv;
3821   gint x, y;
3822
3823   if (priv->auto_scroll)
3824     {
3825       gdk_window_get_device_position (gtk_widget_get_window (priv->tree_view),
3826                                       priv->grab_pointer,
3827                                       &x, &y, NULL);
3828       gtk_combo_box_list_auto_scroll (combo_box, x, y);
3829     }
3830
3831   return TRUE;
3832 }
3833
3834 static gboolean
3835 gtk_combo_box_list_enter_notify (GtkWidget        *widget,
3836                                  GdkEventCrossing *event,
3837                                  gpointer          data)
3838 {
3839   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
3840
3841   combo_box->priv->auto_scroll = TRUE;
3842
3843   return TRUE;
3844 }
3845
3846 static gboolean
3847 gtk_combo_box_list_select_func (GtkTreeSelection *selection,
3848                                 GtkTreeModel     *model,
3849                                 GtkTreePath      *path,
3850                                 gboolean          path_currently_selected,
3851                                 gpointer          data)
3852 {
3853   GList *list, *columns;
3854   gboolean sensitive = FALSE;
3855
3856   columns = gtk_tree_view_get_columns (gtk_tree_selection_get_tree_view (selection));
3857
3858   for (list = columns; list && !sensitive; list = list->next)
3859     {
3860       GList *cells, *cell;
3861       gboolean cell_sensitive, cell_visible;
3862       GtkTreeIter iter;
3863       GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3864
3865       if (!gtk_tree_view_column_get_visible (column))
3866         continue;
3867
3868       gtk_tree_model_get_iter (model, &iter, path);
3869       gtk_tree_view_column_cell_set_cell_data (column, model, &iter,
3870                                                FALSE, FALSE);
3871
3872       cell = cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (column));
3873       while (cell)
3874         {
3875           g_object_get (cell->data,
3876                         "sensitive", &cell_sensitive,
3877                         "visible", &cell_visible,
3878                         NULL);
3879
3880           if (cell_visible && cell_sensitive)
3881             {
3882               sensitive = TRUE;
3883               break;
3884             }
3885
3886           cell = cell->next;
3887         }
3888
3889       g_list_free (cells);
3890     }
3891
3892   g_list_free (columns);
3893
3894   return sensitive;
3895 }
3896
3897 static void
3898 gtk_combo_box_list_row_changed (GtkTreeModel *model,
3899                                 GtkTreePath  *path,
3900                                 GtkTreeIter  *iter,
3901                                 gpointer      data)
3902 {
3903   /* XXX Do nothing ? */
3904 }
3905
3906 /*
3907  * GtkCellLayout implementation
3908  */
3909 static GtkCellArea *
3910 gtk_combo_box_cell_layout_get_area (GtkCellLayout *cell_layout)
3911 {
3912   GtkComboBox *combo = GTK_COMBO_BOX (cell_layout);
3913   GtkComboBoxPrivate *priv = combo->priv;
3914
3915   if (G_UNLIKELY (!priv->area))
3916     {
3917       priv->area = gtk_cell_area_box_new ();
3918       g_object_ref_sink (priv->area);
3919     }
3920
3921   return priv->area;
3922 }
3923
3924 /*
3925  * public API
3926  */
3927
3928 /**
3929  * gtk_combo_box_new:
3930  *
3931  * Creates a new empty #GtkComboBox.
3932  *
3933  * Return value: A new #GtkComboBox.
3934  *
3935  * Since: 2.4
3936  */
3937 GtkWidget *
3938 gtk_combo_box_new (void)
3939 {
3940   return g_object_new (GTK_TYPE_COMBO_BOX, NULL);
3941 }
3942
3943 /**
3944  * gtk_combo_box_new_with_area:
3945  * @area: the #GtkCellArea to use to layout cell renderers
3946  *
3947  * Creates a new empty #GtkComboBox using @area to layout cells.
3948  *
3949  * Return value: A new #GtkComboBox.
3950  */
3951 GtkWidget *
3952 gtk_combo_box_new_with_area (GtkCellArea  *area)
3953 {
3954   return g_object_new (GTK_TYPE_COMBO_BOX, "cell-area", area, NULL);
3955 }
3956
3957 /**
3958  * gtk_combo_box_new_with_area_and_entry:
3959  * @area: the #GtkCellArea to use to layout cell renderers
3960  *
3961  * Creates a new empty #GtkComboBox with an entry.
3962  *
3963  * The new combo box will use @area to layout cells.
3964  *
3965  * Return value: A new #GtkComboBox.
3966  */
3967 GtkWidget *
3968 gtk_combo_box_new_with_area_and_entry (GtkCellArea *area)
3969 {
3970   return g_object_new (GTK_TYPE_COMBO_BOX,
3971                        "has-entry", TRUE,
3972                        "cell-area", area,
3973                        NULL);
3974 }
3975
3976
3977 /**
3978  * gtk_combo_box_new_with_entry:
3979  *
3980  * Creates a new empty #GtkComboBox with an entry.
3981  *
3982  * Return value: A new #GtkComboBox.
3983  */
3984 GtkWidget *
3985 gtk_combo_box_new_with_entry (void)
3986 {
3987   return g_object_new (GTK_TYPE_COMBO_BOX, "has-entry", TRUE, NULL);
3988 }
3989
3990 /**
3991  * gtk_combo_box_new_with_model:
3992  * @model: A #GtkTreeModel.
3993  *
3994  * Creates a new #GtkComboBox with the model initialized to @model.
3995  *
3996  * Return value: A new #GtkComboBox.
3997  *
3998  * Since: 2.4
3999  */
4000 GtkWidget *
4001 gtk_combo_box_new_with_model (GtkTreeModel *model)
4002 {
4003   GtkComboBox *combo_box;
4004
4005   g_return_val_if_fail (GTK_IS_TREE_MODEL (model), NULL);
4006
4007   combo_box = g_object_new (GTK_TYPE_COMBO_BOX, "model", model, NULL);
4008
4009   return GTK_WIDGET (combo_box);
4010 }
4011
4012 /**
4013  * gtk_combo_box_new_with_model_and_entry:
4014  * @model: A #GtkTreeModel
4015  *
4016  * Creates a new empty #GtkComboBox with an entry
4017  * and with the model initialized to @model.
4018  *
4019  * Return value: A new #GtkComboBox
4020  */
4021 GtkWidget *
4022 gtk_combo_box_new_with_model_and_entry (GtkTreeModel *model)
4023 {
4024   return g_object_new (GTK_TYPE_COMBO_BOX,
4025                        "has-entry", TRUE,
4026                        "model", model,
4027                        NULL);
4028 }
4029
4030 /**
4031  * gtk_combo_box_get_wrap_width:
4032  * @combo_box: A #GtkComboBox
4033  *
4034  * Returns the wrap width which is used to determine the number of columns
4035  * for the popup menu. If the wrap width is larger than 1, the combo box
4036  * is in table mode.
4037  *
4038  * Returns: the wrap width.
4039  *
4040  * Since: 2.6
4041  */
4042 gint
4043 gtk_combo_box_get_wrap_width (GtkComboBox *combo_box)
4044 {
4045   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
4046
4047   return combo_box->priv->wrap_width;
4048 }
4049
4050 /**
4051  * gtk_combo_box_set_wrap_width:
4052  * @combo_box: A #GtkComboBox
4053  * @width: Preferred number of columns
4054  *
4055  * Sets the wrap width of @combo_box to be @width. The wrap width is basically
4056  * the preferred number of columns when you want the popup to be layed out
4057  * in a table.
4058  *
4059  * Since: 2.4
4060  */
4061 void
4062 gtk_combo_box_set_wrap_width (GtkComboBox *combo_box,
4063                               gint         width)
4064 {
4065   GtkComboBoxPrivate *priv;
4066
4067   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4068   g_return_if_fail (width >= 0);
4069
4070   priv = combo_box->priv;
4071
4072   if (width != priv->wrap_width)
4073     {
4074       priv->wrap_width = width;
4075
4076       gtk_combo_box_check_appearance (combo_box);
4077
4078       if (GTK_IS_TREE_MENU (priv->popup_widget))
4079         _gtk_tree_menu_set_wrap_width (GTK_TREE_MENU (priv->popup_widget), priv->wrap_width);
4080
4081       g_object_notify (G_OBJECT (combo_box), "wrap-width");
4082     }
4083 }
4084
4085 /**
4086  * gtk_combo_box_get_row_span_column:
4087  * @combo_box: A #GtkComboBox
4088  *
4089  * Returns the column with row span information for @combo_box.
4090  *
4091  * Returns: the row span column.
4092  *
4093  * Since: 2.6
4094  */
4095 gint
4096 gtk_combo_box_get_row_span_column (GtkComboBox *combo_box)
4097 {
4098   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
4099
4100   return combo_box->priv->row_column;
4101 }
4102
4103 /**
4104  * gtk_combo_box_set_row_span_column:
4105  * @combo_box: A #GtkComboBox.
4106  * @row_span: A column in the model passed during construction.
4107  *
4108  * Sets the column with row span information for @combo_box to be @row_span.
4109  * The row span column contains integers which indicate how many rows
4110  * an item should span.
4111  *
4112  * Since: 2.4
4113  */
4114 void
4115 gtk_combo_box_set_row_span_column (GtkComboBox *combo_box,
4116                                    gint         row_span)
4117 {
4118   GtkComboBoxPrivate *priv;
4119   gint col;
4120
4121   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4122
4123   priv = combo_box->priv;
4124
4125   col = gtk_tree_model_get_n_columns (priv->model);
4126   g_return_if_fail (row_span >= -1 && row_span < col);
4127
4128   if (row_span != priv->row_column)
4129     {
4130       priv->row_column = row_span;
4131
4132       if (GTK_IS_TREE_MENU (priv->popup_widget))
4133         _gtk_tree_menu_set_row_span_column (GTK_TREE_MENU (priv->popup_widget), priv->row_column);
4134
4135       g_object_notify (G_OBJECT (combo_box), "row-span-column");
4136     }
4137 }
4138
4139 /**
4140  * gtk_combo_box_get_column_span_column:
4141  * @combo_box: A #GtkComboBox
4142  *
4143  * Returns the column with column span information for @combo_box.
4144  *
4145  * Returns: the column span column.
4146  *
4147  * Since: 2.6
4148  */
4149 gint
4150 gtk_combo_box_get_column_span_column (GtkComboBox *combo_box)
4151 {
4152   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), -1);
4153
4154   return combo_box->priv->col_column;
4155 }
4156
4157 /**
4158  * gtk_combo_box_set_column_span_column:
4159  * @combo_box: A #GtkComboBox
4160  * @column_span: A column in the model passed during construction
4161  *
4162  * Sets the column with column span information for @combo_box to be
4163  * @column_span. The column span column contains integers which indicate
4164  * how many columns an item should span.
4165  *
4166  * Since: 2.4
4167  */
4168 void
4169 gtk_combo_box_set_column_span_column (GtkComboBox *combo_box,
4170                                       gint         column_span)
4171 {
4172   GtkComboBoxPrivate *priv;
4173   gint col;
4174
4175   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4176
4177   priv = combo_box->priv;
4178
4179   col = gtk_tree_model_get_n_columns (priv->model);
4180   g_return_if_fail (column_span >= -1 && column_span < col);
4181
4182   if (column_span != priv->col_column)
4183     {
4184       priv->col_column = column_span;
4185
4186       if (GTK_IS_TREE_MENU (priv->popup_widget))
4187         _gtk_tree_menu_set_column_span_column (GTK_TREE_MENU (priv->popup_widget), priv->col_column);
4188
4189       g_object_notify (G_OBJECT (combo_box), "column-span-column");
4190     }
4191 }
4192
4193 /**
4194  * gtk_combo_box_get_active:
4195  * @combo_box: A #GtkComboBox
4196  *
4197  * Returns the index of the currently active item, or -1 if there's no
4198  * active item. If the model is a non-flat treemodel, and the active item
4199  * is not an immediate child of the root of the tree, this function returns
4200  * <literal>gtk_tree_path_get_indices (path)[0]</literal>, where
4201  * <literal>path</literal> is the #GtkTreePath of the active item.
4202  *
4203  * Return value: An integer which is the index of the currently active item,
4204  *     or -1 if there's no active item.
4205  *
4206  * Since: 2.4
4207  */
4208 gint
4209 gtk_combo_box_get_active (GtkComboBox *combo_box)
4210 {
4211   GtkComboBoxPrivate *priv;
4212   gint result;
4213
4214   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
4215
4216   priv = combo_box->priv;
4217
4218   if (gtk_tree_row_reference_valid (priv->active_row))
4219     {
4220       GtkTreePath *path;
4221
4222       path = gtk_tree_row_reference_get_path (priv->active_row);
4223       result = gtk_tree_path_get_indices (path)[0];
4224       gtk_tree_path_free (path);
4225     }
4226   else
4227     result = -1;
4228
4229   return result;
4230 }
4231
4232 /**
4233  * gtk_combo_box_set_active:
4234  * @combo_box: A #GtkComboBox
4235  * @index_: An index in the model passed during construction, or -1 to have
4236  * no active item
4237  *
4238  * Sets the active item of @combo_box to be the item at @index.
4239  *
4240  * Since: 2.4
4241  */
4242 void
4243 gtk_combo_box_set_active (GtkComboBox *combo_box,
4244                           gint         index_)
4245 {
4246   GtkTreePath *path = NULL;
4247   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4248   g_return_if_fail (index_ >= -1);
4249
4250   if (combo_box->priv->model == NULL)
4251     {
4252       /* Save index, in case the model is set after the index */
4253       combo_box->priv->active = index_;
4254       if (index_ != -1)
4255         return;
4256     }
4257
4258   if (index_ != -1)
4259     path = gtk_tree_path_new_from_indices (index_, -1);
4260
4261   gtk_combo_box_set_active_internal (combo_box, path);
4262
4263   if (path)
4264     gtk_tree_path_free (path);
4265 }
4266
4267 static void
4268 gtk_combo_box_set_active_internal (GtkComboBox *combo_box,
4269                                    GtkTreePath *path)
4270 {
4271   GtkComboBoxPrivate *priv = combo_box->priv;
4272   GtkTreePath *active_path;
4273   gint path_cmp;
4274
4275   /* Remember whether the initially active row is valid. */
4276   gboolean is_valid_row_reference = gtk_tree_row_reference_valid (priv->active_row);
4277
4278   if (path && is_valid_row_reference)
4279     {
4280       active_path = gtk_tree_row_reference_get_path (priv->active_row);
4281       path_cmp = gtk_tree_path_compare (path, active_path);
4282       gtk_tree_path_free (active_path);
4283       if (path_cmp == 0)
4284         return;
4285     }
4286
4287   if (priv->active_row)
4288     {
4289       gtk_tree_row_reference_free (priv->active_row);
4290       priv->active_row = NULL;
4291     }
4292
4293   if (!path)
4294     {
4295       if (priv->tree_view)
4296         gtk_tree_selection_unselect_all (gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view)));
4297       else
4298         {
4299           GtkMenu *menu = GTK_MENU (priv->popup_widget);
4300
4301           if (GTK_IS_MENU (menu))
4302             gtk_menu_set_active (menu, -1);
4303         }
4304
4305       if (priv->cell_view)
4306         gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view), NULL);
4307
4308       /*
4309        *  Do not emit a "changed" signal when an already invalid selection was
4310        *  now set to invalid.
4311        */
4312       if (!is_valid_row_reference)
4313         return;
4314     }
4315   else
4316     {
4317       priv->active_row =
4318         gtk_tree_row_reference_new (priv->model, path);
4319
4320       if (priv->tree_view)
4321         {
4322           gtk_tree_view_set_cursor (GTK_TREE_VIEW (priv->tree_view),
4323                                     path, NULL, FALSE);
4324         }
4325       else if (GTK_IS_MENU (priv->popup_widget))
4326         {
4327           /* FIXME handle nested menus better */
4328           gtk_menu_set_active (GTK_MENU (priv->popup_widget),
4329                                gtk_tree_path_get_indices (path)[0]);
4330         }
4331
4332       if (priv->cell_view)
4333         gtk_cell_view_set_displayed_row (GTK_CELL_VIEW (priv->cell_view),
4334                                          path);
4335     }
4336
4337   g_signal_emit (combo_box, combo_box_signals[CHANGED], 0);
4338   g_object_notify (G_OBJECT (combo_box), "active");
4339   if (combo_box->priv->id_column >= 0)
4340     g_object_notify (G_OBJECT (combo_box), "active-id");
4341 }
4342
4343
4344 /**
4345  * gtk_combo_box_get_active_iter:
4346  * @combo_box: A #GtkComboBox
4347  * @iter: (out): The uninitialized #GtkTreeIter
4348  *
4349  * Sets @iter to point to the current active item, if it exists.
4350  *
4351  * Return value: %TRUE, if @iter was set
4352  *
4353  * Since: 2.4
4354  */
4355 gboolean
4356 gtk_combo_box_get_active_iter (GtkComboBox     *combo_box,
4357                                GtkTreeIter     *iter)
4358 {
4359   GtkTreePath *path;
4360   gboolean result;
4361
4362   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
4363
4364   if (!gtk_tree_row_reference_valid (combo_box->priv->active_row))
4365     return FALSE;
4366
4367   path = gtk_tree_row_reference_get_path (combo_box->priv->active_row);
4368   result = gtk_tree_model_get_iter (combo_box->priv->model, iter, path);
4369   gtk_tree_path_free (path);
4370
4371   return result;
4372 }
4373
4374 /**
4375  * gtk_combo_box_set_active_iter:
4376  * @combo_box: A #GtkComboBox
4377  * @iter: (allow-none): The #GtkTreeIter, or %NULL
4378  *
4379  * Sets the current active item to be the one referenced by @iter, or
4380  * unsets the active item if @iter is %NULL.
4381  *
4382  * Since: 2.4
4383  */
4384 void
4385 gtk_combo_box_set_active_iter (GtkComboBox     *combo_box,
4386                                GtkTreeIter     *iter)
4387 {
4388   GtkTreePath *path = NULL;
4389
4390   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4391
4392   if (iter)
4393     path = gtk_tree_model_get_path (gtk_combo_box_get_model (combo_box), iter);
4394
4395   gtk_combo_box_set_active_internal (combo_box, path);
4396   gtk_tree_path_free (path);
4397 }
4398
4399 /**
4400  * gtk_combo_box_set_model:
4401  * @combo_box: A #GtkComboBox
4402  * @model: (allow-none): A #GtkTreeModel
4403  *
4404  * Sets the model used by @combo_box to be @model. Will unset a previously set
4405  * model (if applicable). If model is %NULL, then it will unset the model.
4406  *
4407  * Note that this function does not clear the cell renderers, you have to
4408  * call gtk_cell_layout_clear() yourself if you need to set up different
4409  * cell renderers for the new model.
4410  *
4411  * Since: 2.4
4412  */
4413 void
4414 gtk_combo_box_set_model (GtkComboBox  *combo_box,
4415                          GtkTreeModel *model)
4416 {
4417   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4418   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
4419
4420   if (model == combo_box->priv->model)
4421     return;
4422
4423   gtk_combo_box_unset_model (combo_box);
4424
4425   if (model == NULL)
4426     goto out;
4427
4428   combo_box->priv->model = model;
4429   g_object_ref (combo_box->priv->model);
4430
4431   combo_box->priv->inserted_id =
4432     g_signal_connect (combo_box->priv->model, "row-inserted",
4433                       G_CALLBACK (gtk_combo_box_model_row_inserted),
4434                       combo_box);
4435   combo_box->priv->deleted_id =
4436     g_signal_connect (combo_box->priv->model, "row-deleted",
4437                       G_CALLBACK (gtk_combo_box_model_row_deleted),
4438                       combo_box);
4439   combo_box->priv->reordered_id =
4440     g_signal_connect (combo_box->priv->model, "rows-reordered",
4441                       G_CALLBACK (gtk_combo_box_model_rows_reordered),
4442                       combo_box);
4443   combo_box->priv->changed_id =
4444     g_signal_connect (combo_box->priv->model, "row-changed",
4445                       G_CALLBACK (gtk_combo_box_model_row_changed),
4446                       combo_box);
4447
4448   if (combo_box->priv->tree_view)
4449     {
4450       /* list mode */
4451       gtk_tree_view_set_model (GTK_TREE_VIEW (combo_box->priv->tree_view),
4452                                combo_box->priv->model);
4453       gtk_combo_box_list_popup_resize (combo_box);
4454     }
4455
4456   if (GTK_IS_TREE_MENU (combo_box->priv->popup_widget))
4457     {
4458       /* menu mode */
4459       _gtk_tree_menu_set_model (GTK_TREE_MENU (combo_box->priv->popup_widget),
4460                                 combo_box->priv->model);
4461     }
4462
4463   if (combo_box->priv->cell_view)
4464     gtk_cell_view_set_model (GTK_CELL_VIEW (combo_box->priv->cell_view),
4465                              combo_box->priv->model);
4466
4467   if (combo_box->priv->active != -1)
4468     {
4469       /* If an index was set in advance, apply it now */
4470       gtk_combo_box_set_active (combo_box, combo_box->priv->active);
4471       combo_box->priv->active = -1;
4472     }
4473
4474 out:
4475   gtk_combo_box_update_sensitivity (combo_box);
4476
4477   g_object_notify (G_OBJECT (combo_box), "model");
4478 }
4479
4480 /**
4481  * gtk_combo_box_get_model:
4482  * @combo_box: A #GtkComboBox
4483  *
4484  * Returns the #GtkTreeModel which is acting as data source for @combo_box.
4485  *
4486  * Return value: (transfer none): A #GtkTreeModel which was passed
4487  *     during construction.
4488  *
4489  * Since: 2.4
4490  */
4491 GtkTreeModel *
4492 gtk_combo_box_get_model (GtkComboBox *combo_box)
4493 {
4494   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
4495
4496   return combo_box->priv->model;
4497 }
4498
4499 static void
4500 gtk_combo_box_real_move_active (GtkComboBox   *combo_box,
4501                                 GtkScrollType  scroll)
4502 {
4503   GtkTreeIter iter;
4504   GtkTreeIter new_iter;
4505   gboolean    active_iter;
4506   gboolean    found;
4507
4508   if (!combo_box->priv->model)
4509     {
4510       gtk_widget_error_bell (GTK_WIDGET (combo_box));
4511       return;
4512     }
4513
4514   active_iter = gtk_combo_box_get_active_iter (combo_box, &iter);
4515
4516   switch (scroll)
4517     {
4518     case GTK_SCROLL_STEP_BACKWARD:
4519     case GTK_SCROLL_STEP_UP:
4520     case GTK_SCROLL_STEP_LEFT:
4521       if (active_iter)
4522         {
4523           found = tree_prev (combo_box, combo_box->priv->model,
4524                              &iter, &new_iter, FALSE);
4525           break;
4526         }
4527       /* else fall through */
4528
4529     case GTK_SCROLL_PAGE_FORWARD:
4530     case GTK_SCROLL_PAGE_DOWN:
4531     case GTK_SCROLL_PAGE_RIGHT:
4532     case GTK_SCROLL_END:
4533       found = tree_last (combo_box, combo_box->priv->model, &new_iter, FALSE);
4534       break;
4535
4536     case GTK_SCROLL_STEP_FORWARD:
4537     case GTK_SCROLL_STEP_DOWN:
4538     case GTK_SCROLL_STEP_RIGHT:
4539       if (active_iter)
4540         {
4541           found = tree_next (combo_box, combo_box->priv->model,
4542                              &iter, &new_iter, FALSE);
4543           break;
4544         }
4545       /* else fall through */
4546
4547     case GTK_SCROLL_PAGE_BACKWARD:
4548     case GTK_SCROLL_PAGE_UP:
4549     case GTK_SCROLL_PAGE_LEFT:
4550     case GTK_SCROLL_START:
4551       found = tree_first (combo_box, combo_box->priv->model, &new_iter, FALSE);
4552       break;
4553
4554     default:
4555       return;
4556     }
4557
4558   if (found && active_iter)
4559     {
4560       GtkTreePath *old_path;
4561       GtkTreePath *new_path;
4562
4563       old_path = gtk_tree_model_get_path (combo_box->priv->model, &iter);
4564       new_path = gtk_tree_model_get_path (combo_box->priv->model, &new_iter);
4565
4566       if (gtk_tree_path_compare (old_path, new_path) == 0)
4567         found = FALSE;
4568
4569       gtk_tree_path_free (old_path);
4570       gtk_tree_path_free (new_path);
4571     }
4572
4573   if (found)
4574     {
4575       gtk_combo_box_set_active_iter (combo_box, &new_iter);
4576     }
4577   else
4578     {
4579       gtk_widget_error_bell (GTK_WIDGET (combo_box));
4580     }
4581 }
4582
4583 static gboolean
4584 gtk_combo_box_mnemonic_activate (GtkWidget *widget,
4585                                  gboolean   group_cycling)
4586 {
4587   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
4588
4589   if (combo_box->priv->has_entry)
4590     {
4591       GtkWidget* child;
4592
4593       child = gtk_bin_get_child (GTK_BIN (combo_box));
4594       if (child)
4595         gtk_widget_grab_focus (child);
4596     }
4597   else
4598     gtk_widget_grab_focus (combo_box->priv->button);
4599
4600   return TRUE;
4601 }
4602
4603 static void
4604 gtk_combo_box_grab_focus (GtkWidget *widget)
4605 {
4606   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
4607
4608   if (combo_box->priv->has_entry)
4609     {
4610       GtkWidget *child;
4611
4612       child = gtk_bin_get_child (GTK_BIN (combo_box));
4613       if (child)
4614         gtk_widget_grab_focus (child);
4615     }
4616   else
4617     gtk_widget_grab_focus (combo_box->priv->button);
4618 }
4619
4620 static void
4621 gtk_combo_box_destroy (GtkWidget *widget)
4622 {
4623   GtkComboBox *combo_box = GTK_COMBO_BOX (widget);
4624
4625   if (combo_box->priv->popup_idle_id > 0)
4626     {
4627       g_source_remove (combo_box->priv->popup_idle_id);
4628       combo_box->priv->popup_idle_id = 0;
4629     }
4630
4631   gtk_combo_box_popdown (combo_box);
4632
4633   if (combo_box->priv->row_separator_destroy)
4634     combo_box->priv->row_separator_destroy (combo_box->priv->row_separator_data);
4635
4636   combo_box->priv->row_separator_func = NULL;
4637   combo_box->priv->row_separator_data = NULL;
4638   combo_box->priv->row_separator_destroy = NULL;
4639
4640   GTK_WIDGET_CLASS (gtk_combo_box_parent_class)->destroy (widget);
4641   combo_box->priv->cell_view = NULL;
4642 }
4643
4644 static void
4645 gtk_combo_box_entry_contents_changed (GtkEntry *entry,
4646                                       gpointer  user_data)
4647 {
4648   GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
4649
4650   /*
4651    *  Fixes regression reported in bug #574059. The old functionality relied on
4652    *  bug #572478.  As a bugfix, we now emit the "changed" signal ourselves
4653    *  when the selection was already set to -1.
4654    */
4655   if (gtk_combo_box_get_active(combo_box) == -1)
4656     g_signal_emit_by_name (combo_box, "changed");
4657   else
4658     gtk_combo_box_set_active (combo_box, -1);
4659 }
4660
4661 static void
4662 gtk_combo_box_entry_active_changed (GtkComboBox *combo_box,
4663                                     gpointer     user_data)
4664 {
4665   GtkTreeModel *model;
4666   GtkTreeIter iter;
4667
4668   if (gtk_combo_box_get_active_iter (combo_box, &iter))
4669     {
4670       GtkEntry *entry = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (combo_box)));
4671
4672       if (entry)
4673         {
4674           GtkTreePath *path;
4675           gchar       *path_str;
4676           gchar       *text = NULL;
4677
4678           model    = gtk_combo_box_get_model (combo_box);
4679           path     = gtk_tree_model_get_path (model, &iter);
4680           path_str = gtk_tree_path_to_string (path);
4681
4682           g_signal_handlers_block_by_func (entry,
4683                                            gtk_combo_box_entry_contents_changed,
4684                                            combo_box);
4685
4686
4687           g_signal_emit (combo_box, combo_box_signals[FORMAT_ENTRY_TEXT], 0,
4688                          path_str, &text);
4689
4690           gtk_entry_set_text (entry, text);
4691
4692           g_signal_handlers_unblock_by_func (entry,
4693                                              gtk_combo_box_entry_contents_changed,
4694                                              combo_box);
4695
4696           gtk_tree_path_free (path);
4697           g_free (text);
4698           g_free (path_str);
4699         }
4700     }
4701 }
4702
4703 static gchar *
4704 gtk_combo_box_format_entry_text (GtkComboBox     *combo_box,
4705                                  const gchar     *path)
4706 {
4707   GtkComboBoxPrivate *priv = combo_box->priv;
4708   GtkTreeModel       *model;
4709   GtkTreeIter         iter;
4710   gchar              *text = NULL;
4711
4712   if (priv->text_column >= 0)
4713     {
4714       model = gtk_combo_box_get_model (combo_box);
4715       gtk_tree_model_get_iter_from_string (model, &iter, path);
4716
4717       gtk_tree_model_get (model, &iter,
4718                           priv->text_column, &text,
4719                           -1);
4720     }
4721
4722   return text;
4723 }
4724
4725
4726 static GObject *
4727 gtk_combo_box_constructor (GType                  type,
4728                            guint                  n_construct_properties,
4729                            GObjectConstructParam *construct_properties)
4730 {
4731   GObject            *object;
4732   GtkComboBox        *combo_box;
4733   GtkComboBoxPrivate *priv;
4734
4735   object = G_OBJECT_CLASS (gtk_combo_box_parent_class)->constructor
4736     (type, n_construct_properties, construct_properties);
4737
4738   combo_box = GTK_COMBO_BOX (object);
4739   priv      = combo_box->priv;
4740
4741   if (!priv->area)
4742     {
4743       priv->area = gtk_cell_area_box_new ();
4744       g_object_ref_sink (priv->area);
4745     }
4746
4747   priv->cell_view = gtk_cell_view_new_with_context (priv->area, NULL);
4748   gtk_cell_view_set_fit_model (GTK_CELL_VIEW (priv->cell_view), TRUE);
4749   gtk_cell_view_set_model (GTK_CELL_VIEW (priv->cell_view), priv->model);
4750   gtk_widget_set_parent (priv->cell_view, GTK_WIDGET (combo_box));
4751   _gtk_bin_set_child (GTK_BIN (combo_box), priv->cell_view);
4752   gtk_widget_show (priv->cell_view);
4753
4754   gtk_combo_box_check_appearance (combo_box);
4755
4756   if (priv->has_entry)
4757     {
4758       GtkWidget *entry;
4759       GtkStyleContext *context;
4760
4761       entry = gtk_entry_new ();
4762       gtk_widget_show (entry);
4763       gtk_container_add (GTK_CONTAINER (combo_box), entry);
4764
4765       context = gtk_widget_get_style_context (GTK_WIDGET (combo_box));
4766       gtk_style_context_add_class (context, GTK_STYLE_CLASS_COMBOBOX_ENTRY);
4767
4768       priv->text_renderer = gtk_cell_renderer_text_new ();
4769       gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box),
4770                                   priv->text_renderer, TRUE);
4771
4772       gtk_combo_box_set_active (GTK_COMBO_BOX (combo_box), -1);
4773
4774       g_signal_connect (combo_box, "changed",
4775                         G_CALLBACK (gtk_combo_box_entry_active_changed), NULL);
4776     }
4777
4778   return object;
4779 }
4780
4781
4782 static void
4783 gtk_combo_box_dispose(GObject* object)
4784 {
4785   GtkComboBox *combo_box = GTK_COMBO_BOX (object);
4786
4787   if (GTK_IS_MENU (combo_box->priv->popup_widget))
4788     {
4789       gtk_combo_box_menu_destroy (combo_box);
4790       gtk_menu_detach (GTK_MENU (combo_box->priv->popup_widget));
4791       combo_box->priv->popup_widget = NULL;
4792     }
4793
4794   if (combo_box->priv->area)
4795     {
4796       g_object_unref (combo_box->priv->area);
4797       combo_box->priv->area = NULL;
4798     }
4799
4800   if (GTK_IS_TREE_VIEW (combo_box->priv->tree_view))
4801     gtk_combo_box_list_destroy (combo_box);
4802
4803   if (combo_box->priv->popup_window)
4804     {
4805       gtk_widget_destroy (combo_box->priv->popup_window);
4806       combo_box->priv->popup_window = NULL;
4807     }
4808
4809   gtk_combo_box_unset_model (combo_box);
4810
4811   G_OBJECT_CLASS (gtk_combo_box_parent_class)->dispose (object);
4812 }
4813
4814 static void
4815 gtk_combo_box_finalize (GObject *object)
4816 {
4817   GtkComboBox *combo_box = GTK_COMBO_BOX (object);
4818
4819   g_free (combo_box->priv->tearoff_title);
4820
4821   G_OBJECT_CLASS (gtk_combo_box_parent_class)->finalize (object);
4822 }
4823
4824 static gboolean
4825 gtk_cell_editable_key_press (GtkWidget   *widget,
4826                              GdkEventKey *event,
4827                              gpointer     data)
4828 {
4829   GtkComboBox *combo_box = GTK_COMBO_BOX (data);
4830
4831   if (event->keyval == GDK_KEY_Escape)
4832     {
4833       g_object_set (combo_box,
4834                     "editing-canceled", TRUE,
4835                     NULL);
4836       gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (combo_box));
4837       gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (combo_box));
4838
4839       return TRUE;
4840     }
4841   else if (event->keyval == GDK_KEY_Return ||
4842            event->keyval == GDK_KEY_ISO_Enter ||
4843            event->keyval == GDK_KEY_KP_Enter)
4844     {
4845       gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (combo_box));
4846       gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (combo_box));
4847
4848       return TRUE;
4849     }
4850
4851   return FALSE;
4852 }
4853
4854 static gboolean
4855 popdown_idle (gpointer data)
4856 {
4857   GtkComboBox *combo_box;
4858
4859   combo_box = GTK_COMBO_BOX (data);
4860
4861   gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (combo_box));
4862   gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (combo_box));
4863
4864   g_object_unref (combo_box);
4865
4866   return FALSE;
4867 }
4868
4869 static void
4870 popdown_handler (GtkWidget *widget,
4871                  gpointer   data)
4872 {
4873   gdk_threads_add_idle (popdown_idle, g_object_ref (data));
4874 }
4875
4876 static gboolean
4877 popup_idle (gpointer data)
4878 {
4879   GtkComboBox *combo_box;
4880
4881   combo_box = GTK_COMBO_BOX (data);
4882
4883   if (GTK_IS_MENU (combo_box->priv->popup_widget) &&
4884       combo_box->priv->cell_view)
4885     g_signal_connect_object (combo_box->priv->popup_widget,
4886                              "unmap", G_CALLBACK (popdown_handler),
4887                              combo_box, 0);
4888
4889   /* we unset this if a menu item is activated */
4890   g_object_set (combo_box,
4891                 "editing-canceled", TRUE,
4892                 NULL);
4893   gtk_combo_box_popup (combo_box);
4894
4895   combo_box->priv->popup_idle_id = 0;
4896   combo_box->priv->activate_button = 0;
4897   combo_box->priv->activate_time = 0;
4898
4899   return FALSE;
4900 }
4901
4902 static void
4903 gtk_combo_box_start_editing (GtkCellEditable *cell_editable,
4904                              GdkEvent        *event)
4905 {
4906   GtkComboBox *combo_box = GTK_COMBO_BOX (cell_editable);
4907   GtkWidget *child;
4908
4909   combo_box->priv->is_cell_renderer = TRUE;
4910
4911   if (combo_box->priv->cell_view)
4912     {
4913       g_signal_connect_object (combo_box->priv->button, "key-press-event",
4914                                G_CALLBACK (gtk_cell_editable_key_press),
4915                                cell_editable, 0);
4916
4917       gtk_widget_grab_focus (combo_box->priv->button);
4918     }
4919   else
4920     {
4921       child = gtk_bin_get_child (GTK_BIN (combo_box));
4922
4923       g_signal_connect_object (child, "key-press-event",
4924                                G_CALLBACK (gtk_cell_editable_key_press),
4925                                cell_editable, 0);
4926
4927       gtk_widget_grab_focus (child);
4928       gtk_widget_set_can_focus (combo_box->priv->button, FALSE);
4929     }
4930
4931   /* we do the immediate popup only for the optionmenu-like
4932    * appearance
4933    */
4934   if (combo_box->priv->is_cell_renderer &&
4935       combo_box->priv->cell_view && !combo_box->priv->tree_view)
4936     {
4937       if (event && event->type == GDK_BUTTON_PRESS)
4938         {
4939           GdkEventButton *event_button = (GdkEventButton *)event;
4940
4941           combo_box->priv->activate_button = event_button->button;
4942           combo_box->priv->activate_time = event_button->time;
4943         }
4944
4945       combo_box->priv->popup_idle_id =
4946           gdk_threads_add_idle (popup_idle, combo_box);
4947     }
4948 }
4949
4950
4951 /**
4952  * gtk_combo_box_get_add_tearoffs:
4953  * @combo_box: a #GtkComboBox
4954  *
4955  * Gets the current value of the :add-tearoffs property.
4956  *
4957  * Return value: the current value of the :add-tearoffs property.
4958  */
4959 gboolean
4960 gtk_combo_box_get_add_tearoffs (GtkComboBox *combo_box)
4961 {
4962   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
4963
4964   return combo_box->priv->add_tearoffs;
4965 }
4966
4967 /**
4968  * gtk_combo_box_set_add_tearoffs:
4969  * @combo_box: a #GtkComboBox
4970  * @add_tearoffs: %TRUE to add tearoff menu items
4971  *
4972  * Sets whether the popup menu should have a tearoff
4973  * menu item.
4974  *
4975  * Since: 2.6
4976  */
4977 void
4978 gtk_combo_box_set_add_tearoffs (GtkComboBox *combo_box,
4979                                 gboolean     add_tearoffs)
4980 {
4981   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
4982
4983   add_tearoffs = add_tearoffs != FALSE;
4984
4985   if (combo_box->priv->add_tearoffs != add_tearoffs)
4986     {
4987       combo_box->priv->add_tearoffs = add_tearoffs;
4988       gtk_combo_box_check_appearance (combo_box);
4989
4990       if (GTK_IS_TREE_MENU (combo_box->priv->popup_widget))
4991         _gtk_tree_menu_set_tearoff (GTK_TREE_MENU (combo_box->priv->popup_widget),
4992                                     combo_box->priv->add_tearoffs);
4993
4994       g_object_notify (G_OBJECT (combo_box), "add-tearoffs");
4995     }
4996 }
4997
4998 /**
4999  * gtk_combo_box_get_title:
5000  * @combo_box: a #GtkComboBox
5001  *
5002  * Gets the current title of the menu in tearoff mode. See
5003  * gtk_combo_box_set_add_tearoffs().
5004  *
5005  * Returns: the menu's title in tearoff mode. This is an internal copy of the
5006  * string which must not be freed.
5007  *
5008  * Since: 2.10
5009  */
5010 const gchar*
5011 gtk_combo_box_get_title (GtkComboBox *combo_box)
5012 {
5013   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
5014
5015   return combo_box->priv->tearoff_title;
5016 }
5017
5018 static void
5019 gtk_combo_box_update_title (GtkComboBox *combo_box)
5020 {
5021   gtk_combo_box_check_appearance (combo_box);
5022
5023   if (combo_box->priv->popup_widget &&
5024       GTK_IS_MENU (combo_box->priv->popup_widget))
5025     gtk_menu_set_title (GTK_MENU (combo_box->priv->popup_widget),
5026                         combo_box->priv->tearoff_title);
5027 }
5028
5029 /**
5030  * gtk_combo_box_set_title:
5031  * @combo_box: a #GtkComboBox
5032  * @title: a title for the menu in tearoff mode
5033  *
5034  * Sets the menu's title in tearoff mode.
5035  *
5036  * Since: 2.10
5037  */
5038 void
5039 gtk_combo_box_set_title (GtkComboBox *combo_box,
5040                          const gchar *title)
5041 {
5042   GtkComboBoxPrivate *priv;
5043
5044   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5045
5046   priv = combo_box->priv;
5047
5048   if (strcmp (title ? title : "",
5049               priv->tearoff_title ? priv->tearoff_title : "") != 0)
5050     {
5051       g_free (priv->tearoff_title);
5052       priv->tearoff_title = g_strdup (title);
5053
5054       gtk_combo_box_update_title (combo_box);
5055
5056       g_object_notify (G_OBJECT (combo_box), "tearoff-title");
5057     }
5058 }
5059
5060
5061 /**
5062  * gtk_combo_box_set_popup_fixed_width:
5063  * @combo_box: a #GtkComboBox
5064  * @fixed: whether to use a fixed popup width
5065  *
5066  * Specifies whether the popup's width should be a fixed width
5067  * matching the allocated width of the combo box.
5068  *
5069  * Since: 3.0
5070  **/
5071 void
5072 gtk_combo_box_set_popup_fixed_width (GtkComboBox *combo_box,
5073                                      gboolean     fixed)
5074 {
5075   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5076
5077   if (combo_box->priv->popup_fixed_width != fixed)
5078     {
5079       combo_box->priv->popup_fixed_width = fixed;
5080
5081       g_object_notify (G_OBJECT (combo_box), "popup-fixed-width");
5082     }
5083 }
5084
5085 /**
5086  * gtk_combo_box_get_popup_fixed_width:
5087  * @combo_box: a #GtkComboBox
5088  *
5089  * Gets whether the popup uses a fixed width matching
5090  * the allocated width of the combo box.
5091  *
5092  * Returns: %TRUE if the popup uses a fixed width
5093  *
5094  * Since: 3.0
5095  **/
5096 gboolean
5097 gtk_combo_box_get_popup_fixed_width (GtkComboBox *combo_box)
5098 {
5099   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5100
5101   return combo_box->priv->popup_fixed_width;
5102 }
5103
5104
5105 /**
5106  * gtk_combo_box_get_popup_accessible:
5107  * @combo_box: a #GtkComboBox
5108  *
5109  * Gets the accessible object corresponding to the combo box's popup.
5110  *
5111  * This function is mostly intended for use by accessibility technologies;
5112  * applications should have little use for it.
5113  *
5114  * Returns: (transfer none): the accessible object corresponding
5115  *     to the combo box's popup.
5116  *
5117  * Since: 2.6
5118  */
5119 AtkObject*
5120 gtk_combo_box_get_popup_accessible (GtkComboBox *combo_box)
5121 {
5122   AtkObject *atk_obj;
5123
5124   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
5125
5126   if (combo_box->priv->popup_widget)
5127     {
5128       atk_obj = gtk_widget_get_accessible (combo_box->priv->popup_widget);
5129       return atk_obj;
5130     }
5131
5132   return NULL;
5133 }
5134
5135 /**
5136  * gtk_combo_box_get_row_separator_func: (skip)
5137  * @combo_box: a #GtkComboBox
5138  *
5139  * Returns the current row separator function.
5140  *
5141  * Return value: the current row separator function.
5142  *
5143  * Since: 2.6
5144  */
5145 GtkTreeViewRowSeparatorFunc
5146 gtk_combo_box_get_row_separator_func (GtkComboBox *combo_box)
5147 {
5148   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
5149
5150   return combo_box->priv->row_separator_func;
5151 }
5152
5153 /**
5154  * gtk_combo_box_set_row_separator_func:
5155  * @combo_box: a #GtkComboBox
5156  * @func: a #GtkTreeViewRowSeparatorFunc
5157  * @data: (allow-none): user data to pass to @func, or %NULL
5158  * @destroy: (allow-none): destroy notifier for @data, or %NULL
5159  *
5160  * Sets the row separator function, which is used to determine
5161  * whether a row should be drawn as a separator. If the row separator
5162  * function is %NULL, no separators are drawn. This is the default value.
5163  *
5164  * Since: 2.6
5165  */
5166 void
5167 gtk_combo_box_set_row_separator_func (GtkComboBox                 *combo_box,
5168                                       GtkTreeViewRowSeparatorFunc  func,
5169                                       gpointer                     data,
5170                                       GDestroyNotify               destroy)
5171 {
5172   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5173
5174   if (combo_box->priv->row_separator_destroy)
5175     combo_box->priv->row_separator_destroy (combo_box->priv->row_separator_data);
5176
5177   combo_box->priv->row_separator_func = func;
5178   combo_box->priv->row_separator_data = data;
5179   combo_box->priv->row_separator_destroy = destroy;
5180
5181   /* Provoke the underlying treeview/menu to rebuild themselves with the new separator func */
5182   if (combo_box->priv->tree_view)
5183     {
5184       gtk_tree_view_set_model (GTK_TREE_VIEW (combo_box->priv->tree_view), NULL);
5185       gtk_tree_view_set_model (GTK_TREE_VIEW (combo_box->priv->tree_view), combo_box->priv->model);
5186     }
5187
5188   if (GTK_IS_TREE_MENU (combo_box->priv->popup_widget))
5189     {
5190       _gtk_tree_menu_set_model (GTK_TREE_MENU (combo_box->priv->popup_widget), NULL);
5191       _gtk_tree_menu_set_model (GTK_TREE_MENU (combo_box->priv->popup_widget), combo_box->priv->model);
5192     }
5193
5194   gtk_widget_queue_draw (GTK_WIDGET (combo_box));
5195 }
5196
5197 /**
5198  * gtk_combo_box_set_button_sensitivity:
5199  * @combo_box: a #GtkComboBox
5200  * @sensitivity: specify the sensitivity of the dropdown button
5201  *
5202  * Sets whether the dropdown button of the combo box should be
5203  * always sensitive (%GTK_SENSITIVITY_ON), never sensitive (%GTK_SENSITIVITY_OFF)
5204  * or only if there is at least one item to display (%GTK_SENSITIVITY_AUTO).
5205  *
5206  * Since: 2.14
5207  **/
5208 void
5209 gtk_combo_box_set_button_sensitivity (GtkComboBox        *combo_box,
5210                                       GtkSensitivityType  sensitivity)
5211 {
5212   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5213
5214   if (combo_box->priv->button_sensitivity != sensitivity)
5215     {
5216       combo_box->priv->button_sensitivity = sensitivity;
5217       gtk_combo_box_update_sensitivity (combo_box);
5218
5219       g_object_notify (G_OBJECT (combo_box), "button-sensitivity");
5220     }
5221 }
5222
5223 /**
5224  * gtk_combo_box_get_button_sensitivity:
5225  * @combo_box: a #GtkComboBox
5226  *
5227  * Returns whether the combo box sets the dropdown button
5228  * sensitive or not when there are no items in the model.
5229  *
5230  * Return Value: %GTK_SENSITIVITY_ON if the dropdown button
5231  *    is sensitive when the model is empty, %GTK_SENSITIVITY_OFF
5232  *    if the button is always insensitive or
5233  *    %GTK_SENSITIVITY_AUTO if it is only sensitive as long as
5234  *    the model has one item to be selected.
5235  *
5236  * Since: 2.14
5237  **/
5238 GtkSensitivityType
5239 gtk_combo_box_get_button_sensitivity (GtkComboBox *combo_box)
5240 {
5241   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5242
5243   return combo_box->priv->button_sensitivity;
5244 }
5245
5246
5247 /**
5248  * gtk_combo_box_get_has_entry:
5249  * @combo_box: a #GtkComboBox
5250  *
5251  * Returns whether the combo box has an entry.
5252  *
5253  * Return Value: whether there is an entry in @combo_box.
5254  *
5255  * Since: 2.24
5256  **/
5257 gboolean
5258 gtk_combo_box_get_has_entry (GtkComboBox *combo_box)
5259 {
5260   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5261
5262   return combo_box->priv->has_entry;
5263 }
5264
5265 /**
5266  * gtk_combo_box_set_entry_text_column:
5267  * @combo_box: A #GtkComboBox
5268  * @text_column: A column in @model to get the strings from for
5269  *     the internal entry
5270  *
5271  * Sets the model column which @combo_box should use to get strings from
5272  * to be @text_column. The column @text_column in the model of @combo_box
5273  * must be of type %G_TYPE_STRING.
5274  *
5275  * This is only relevant if @combo_box has been created with
5276  * #GtkComboBox:has-entry as %TRUE.
5277  *
5278  * Since: 2.24
5279  */
5280 void
5281 gtk_combo_box_set_entry_text_column (GtkComboBox *combo_box,
5282                                      gint         text_column)
5283 {
5284   GtkComboBoxPrivate *priv = combo_box->priv;
5285   GtkTreeModel *model;
5286
5287   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5288
5289   model = gtk_combo_box_get_model (combo_box);
5290
5291   g_return_if_fail (text_column >= 0);
5292   g_return_if_fail (model == NULL || text_column < gtk_tree_model_get_n_columns (model));
5293
5294   priv->text_column = text_column;
5295
5296   if (priv->text_renderer != NULL)
5297     gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_box),
5298                                     priv->text_renderer,
5299                                     "text", text_column,
5300                                     NULL);
5301 }
5302
5303 /**
5304  * gtk_combo_box_get_entry_text_column:
5305  * @combo_box: A #GtkComboBox.
5306  *
5307  * Returns the column which @combo_box is using to get the strings
5308  * from to display in the internal entry.
5309  *
5310  * Return value: A column in the data source model of @combo_box.
5311  *
5312  * Since: 2.24
5313  */
5314 gint
5315 gtk_combo_box_get_entry_text_column (GtkComboBox *combo_box)
5316 {
5317   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
5318
5319   return combo_box->priv->text_column;
5320 }
5321
5322 /**
5323  * gtk_combo_box_set_focus_on_click:
5324  * @combo: a #GtkComboBox
5325  * @focus_on_click: whether the combo box grabs focus when clicked
5326  *    with the mouse
5327  *
5328  * Sets whether the combo box will grab focus when it is clicked with
5329  * the mouse. Making mouse clicks not grab focus is useful in places
5330  * like toolbars where you don't want the keyboard focus removed from
5331  * the main area of the application.
5332  *
5333  * Since: 2.6
5334  */
5335 void
5336 gtk_combo_box_set_focus_on_click (GtkComboBox *combo_box,
5337                                   gboolean     focus_on_click)
5338 {
5339   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5340
5341   focus_on_click = focus_on_click != FALSE;
5342
5343   if (combo_box->priv->focus_on_click != focus_on_click)
5344     {
5345       combo_box->priv->focus_on_click = focus_on_click;
5346
5347       if (combo_box->priv->button)
5348         gtk_button_set_focus_on_click (GTK_BUTTON (combo_box->priv->button),
5349                                        focus_on_click);
5350
5351       g_object_notify (G_OBJECT (combo_box), "focus-on-click");
5352     }
5353 }
5354
5355 /**
5356  * gtk_combo_box_get_focus_on_click:
5357  * @combo: a #GtkComboBox
5358  *
5359  * Returns whether the combo box grabs focus when it is clicked
5360  * with the mouse. See gtk_combo_box_set_focus_on_click().
5361  *
5362  * Return value: %TRUE if the combo box grabs focus when it is
5363  *     clicked with the mouse.
5364  *
5365  * Since: 2.6
5366  */
5367 gboolean
5368 gtk_combo_box_get_focus_on_click (GtkComboBox *combo_box)
5369 {
5370   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5371
5372   return combo_box->priv->focus_on_click;
5373 }
5374
5375
5376 static gboolean
5377 gtk_combo_box_buildable_custom_tag_start (GtkBuildable  *buildable,
5378                                           GtkBuilder    *builder,
5379                                           GObject       *child,
5380                                           const gchar   *tagname,
5381                                           GMarkupParser *parser,
5382                                           gpointer      *data)
5383 {
5384   if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
5385                                                 tagname, parser, data))
5386     return TRUE;
5387
5388   return _gtk_cell_layout_buildable_custom_tag_start (buildable, builder, child,
5389                                                       tagname, parser, data);
5390 }
5391
5392 static void
5393 gtk_combo_box_buildable_custom_tag_end (GtkBuildable *buildable,
5394                                         GtkBuilder   *builder,
5395                                         GObject      *child,
5396                                         const gchar  *tagname,
5397                                         gpointer     *data)
5398 {
5399   if (!_gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data))
5400     parent_buildable_iface->custom_tag_end (buildable, builder, child, tagname, data);
5401 }
5402
5403 static GObject *
5404 gtk_combo_box_buildable_get_internal_child (GtkBuildable *buildable,
5405                                             GtkBuilder   *builder,
5406                                             const gchar  *childname)
5407 {
5408   GtkComboBox *combo_box = GTK_COMBO_BOX (buildable);
5409
5410   if (combo_box->priv->has_entry && strcmp (childname, "entry") == 0)
5411     return G_OBJECT (gtk_bin_get_child (GTK_BIN (buildable)));
5412
5413   return parent_buildable_iface->get_internal_child (buildable, builder, childname);
5414 }
5415
5416 static void
5417 gtk_combo_box_get_preferred_width (GtkWidget *widget,
5418                                    gint      *minimum_size,
5419                                    gint      *natural_size)
5420 {
5421   GtkComboBox           *combo_box = GTK_COMBO_BOX (widget);
5422   GtkComboBoxPrivate    *priv = combo_box->priv;
5423   gint                   font_size, arrow_size;
5424   PangoContext          *context;
5425   PangoFontMetrics      *metrics;
5426   const PangoFontDescription *font_desc;
5427   GtkWidget             *child;
5428   gint                   minimum_width = 0, natural_width = 0;
5429   gint                   child_min, child_nat;
5430   GtkStyleContext       *style_context;
5431   GtkStateFlags          state;
5432   GtkBorder              padding;
5433   gfloat                 arrow_scaling;
5434
5435   child = gtk_bin_get_child (GTK_BIN (widget));
5436
5437   /* common */
5438   gtk_widget_get_preferred_width (child, &child_min, &child_nat);
5439
5440   gtk_widget_style_get (GTK_WIDGET (widget),
5441                         "arrow-size", &arrow_size,
5442                         "arrow-scaling", &arrow_scaling,
5443                         NULL);
5444
5445   style_context = gtk_widget_get_style_context (widget);
5446   state = gtk_widget_get_state_flags (widget);
5447
5448   get_widget_padding (widget, &padding);
5449   font_desc = gtk_style_context_get_font (style_context, state);
5450
5451   context = gtk_widget_get_pango_context (GTK_WIDGET (widget));
5452   metrics = pango_context_get_metrics (context, font_desc,
5453                                        pango_context_get_language (context));
5454   font_size = PANGO_PIXELS (pango_font_metrics_get_ascent (metrics) +
5455                             pango_font_metrics_get_descent (metrics));
5456   pango_font_metrics_unref (metrics);
5457
5458   arrow_size = MAX (arrow_size, font_size) * arrow_scaling;
5459
5460   gtk_widget_set_size_request (priv->arrow, arrow_size, arrow_size);
5461
5462   if (!priv->tree_view)
5463     {
5464       /* menu mode */
5465       if (priv->cell_view)
5466         {
5467           gint sep_width, arrow_width;
5468           gint border_width, xpad;
5469           GtkBorder button_padding;
5470
5471           border_width = gtk_container_get_border_width (GTK_CONTAINER (combo_box));
5472           get_widget_padding (priv->button, &button_padding);
5473
5474           gtk_widget_get_preferred_width (priv->separator, &sep_width, NULL);
5475           gtk_widget_get_preferred_width (priv->arrow, &arrow_width, NULL);
5476
5477           xpad = 2 * border_width +
5478             button_padding.left + button_padding.right + padding.left + padding.right;
5479
5480           minimum_width  = child_min + sep_width + arrow_width + xpad;
5481           natural_width  = child_nat + sep_width + arrow_width + xpad;
5482         }
5483       else
5484         {
5485           gint but_width, but_nat_width;
5486
5487           gtk_widget_get_preferred_width (priv->button,
5488                                           &but_width, &but_nat_width);
5489
5490           minimum_width  = child_min + but_width;
5491           natural_width  = child_nat + but_nat_width;
5492         }
5493     }
5494   else
5495     {
5496       /* list mode */
5497       gint button_width, button_nat_width;
5498
5499       /* sample + frame */
5500       minimum_width = child_min;
5501       natural_width = child_nat;
5502
5503       if (priv->cell_view_frame)
5504         {
5505           if (priv->has_frame)
5506             {
5507               gint border_width, xpad;
5508               GtkBorder frame_padding;
5509
5510               border_width = gtk_container_get_border_width (GTK_CONTAINER (priv->cell_view_frame));
5511               get_widget_padding (priv->cell_view_frame, &frame_padding);
5512               xpad = (2 * border_width) + frame_padding.left + frame_padding.right;
5513
5514               minimum_width  += xpad;
5515               natural_width  += xpad;
5516             }
5517         }
5518
5519       /* the button */
5520       gtk_widget_get_preferred_width (priv->button,
5521                                       &button_width, &button_nat_width);
5522
5523       minimum_width += button_width;
5524       natural_width += button_nat_width;
5525     }
5526
5527   minimum_width += padding.left + padding.right;
5528   natural_width += padding.left + padding.right;
5529
5530   if (minimum_size)
5531     *minimum_size = minimum_width;
5532
5533   if (natural_size)
5534     *natural_size = natural_width;
5535 }
5536
5537 static void
5538 gtk_combo_box_get_preferred_height (GtkWidget *widget,
5539                                     gint      *minimum_size,
5540                                     gint      *natural_size)
5541 {
5542   gint min_width;
5543
5544   /* Combo box is height-for-width only
5545    * (so we always just reserve enough height for the minimum width) */
5546   GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_width, NULL);
5547   GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width (widget, min_width, minimum_size, natural_size);
5548 }
5549
5550 static void
5551 gtk_combo_box_get_preferred_width_for_height (GtkWidget *widget,
5552                                               gint       avail_size,
5553                                               gint      *minimum_size,
5554                                               gint      *natural_size)
5555 {
5556   /* Combo box is height-for-width only
5557    * (so we assume we always reserved enough height for the minimum width) */
5558   GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_size, natural_size);
5559 }
5560
5561
5562 static void
5563 gtk_combo_box_get_preferred_height_for_width (GtkWidget *widget,
5564                                               gint       avail_size,
5565                                               gint      *minimum_size,
5566                                               gint      *natural_size)
5567 {
5568   GtkComboBox           *combo_box = GTK_COMBO_BOX (widget);
5569   GtkComboBoxPrivate    *priv = combo_box->priv;
5570   gint                   min_height = 0, nat_height = 0;
5571   gint                   size;
5572   GtkWidget             *child;
5573   GtkBorder              padding;
5574
5575   child = gtk_bin_get_child (GTK_BIN (widget));
5576
5577   get_widget_padding (widget, &padding);
5578   size = avail_size;
5579
5580   if (!priv->tree_view)
5581     {
5582       /* menu mode */
5583       if (priv->cell_view)
5584         {
5585           /* calculate x/y padding and separator/arrow size */
5586           gint sep_width, arrow_width, sep_height, arrow_height;
5587           gint border_width, xpad, ypad;
5588           GtkBorder button_padding;
5589
5590           border_width = gtk_container_get_border_width (GTK_CONTAINER (combo_box));
5591           get_widget_padding (priv->button, &button_padding);
5592
5593           gtk_widget_get_preferred_width (priv->separator, &sep_width, NULL);
5594           gtk_widget_get_preferred_width (priv->arrow, &arrow_width, NULL);
5595           gtk_widget_get_preferred_height_for_width (priv->separator,
5596                                                      sep_width, &sep_height, NULL);
5597           gtk_widget_get_preferred_height_for_width (priv->arrow,
5598                                                      arrow_width, &arrow_height, NULL);
5599
5600           xpad = 2 * border_width +
5601             button_padding.left + button_padding.right;
5602           ypad = 2 * border_width +
5603             button_padding.top + button_padding.bottom;
5604
5605           size -= sep_width + arrow_width + xpad;
5606
5607           /* Get height-for-width of the child widget, usually a GtkCellArea calculating
5608            * and fitting the whole treemodel */
5609           gtk_widget_get_preferred_height_for_width (child, size, &min_height, &nat_height);
5610
5611           arrow_height = MAX (arrow_height, sep_height);
5612           min_height = MAX (min_height, arrow_height);
5613           nat_height = MAX (nat_height, arrow_height);
5614
5615           min_height += ypad;
5616           nat_height += ypad;
5617         }
5618       else
5619         {
5620           /* there is a custom child widget inside (no priv->cell_view) */
5621           gint but_width, but_height;
5622
5623           gtk_widget_get_preferred_width (priv->button, &but_width, NULL);
5624           gtk_widget_get_preferred_height_for_width (priv->button,
5625                                                      but_width, &but_height, NULL);
5626
5627           size -= but_width;
5628
5629           /* Get height-for-width of the child widget, usually a GtkCellArea calculating
5630            * and fitting the whole treemodel */
5631           gtk_widget_get_preferred_height_for_width (child, size, &min_height, &nat_height);
5632
5633           min_height = MAX (min_height, but_height);
5634           nat_height = MAX (nat_height, but_height);
5635         }
5636     }
5637   else
5638     {
5639       /* list mode */
5640       gint but_width, but_height;
5641       gint xpad = 0, ypad = 0;
5642
5643       gtk_widget_get_preferred_width (priv->button, &but_width, NULL);
5644       gtk_widget_get_preferred_height_for_width (priv->button,
5645                                                  but_width, &but_height, NULL);
5646
5647       if (priv->cell_view_frame && priv->has_frame)
5648         {
5649           GtkBorder frame_padding;
5650           gint border_width;
5651
5652           border_width = gtk_container_get_border_width (GTK_CONTAINER (priv->cell_view_frame));
5653           get_widget_padding (GTK_WIDGET (priv->cell_view_frame), &frame_padding);
5654
5655           xpad = (2 * border_width) + padding.left + frame_padding.right;
5656           ypad = (2 * border_width) + padding.top + frame_padding.bottom;
5657         }
5658
5659       size -= but_width;
5660       size -= xpad;
5661
5662       /* Get height-for-width of the child widget, usually a GtkCellArea calculating
5663        * and fitting the whole treemodel */
5664       gtk_widget_get_preferred_height_for_width (child, size, &min_height, &nat_height);
5665
5666       min_height = MAX (min_height, but_height);
5667       nat_height = MAX (nat_height, but_height);
5668
5669       min_height += ypad;
5670       nat_height += ypad;
5671     }
5672
5673   min_height += padding.top + padding.bottom;
5674   nat_height += padding.top + padding.bottom;
5675
5676   if (minimum_size)
5677     *minimum_size = min_height;
5678
5679   if (natural_size)
5680     *natural_size = nat_height;
5681 }
5682
5683 /**
5684  * gtk_combo_box_set_id_column:
5685  * @combo_box: A #GtkComboBox
5686  * @id_column: A column in @model to get string IDs for values from
5687  *
5688  * Sets the model column which @combo_box should use to get string IDs
5689  * for values from. The column @id_column in the model of @combo_box
5690  * must be of type %G_TYPE_STRING.
5691  *
5692  * Since: 3.0
5693  */
5694 void
5695 gtk_combo_box_set_id_column (GtkComboBox *combo_box,
5696                              gint         id_column)
5697 {
5698   GtkComboBoxPrivate *priv = combo_box->priv;
5699   GtkTreeModel *model;
5700
5701   g_return_if_fail (GTK_IS_COMBO_BOX (combo_box));
5702
5703   if (id_column != priv->id_column)
5704     {
5705       model = gtk_combo_box_get_model (combo_box);
5706
5707       g_return_if_fail (id_column >= 0);
5708       g_return_if_fail (model == NULL ||
5709                         id_column < gtk_tree_model_get_n_columns (model));
5710
5711       priv->id_column = id_column;
5712
5713       g_object_notify (G_OBJECT (combo_box), "id-column");
5714       g_object_notify (G_OBJECT (combo_box), "active-id");
5715     }
5716 }
5717
5718 /**
5719  * gtk_combo_box_get_id_column:
5720  * @combo_box: A #GtkComboBox
5721  *
5722  * Returns the column which @combo_box is using to get string IDs
5723  * for values from.
5724  *
5725  * Return value: A column in the data source model of @combo_box.
5726  *
5727  * Since: 3.0
5728  */
5729 gint
5730 gtk_combo_box_get_id_column (GtkComboBox *combo_box)
5731 {
5732   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), 0);
5733
5734   return combo_box->priv->id_column;
5735 }
5736
5737 /**
5738  * gtk_combo_box_get_active_id:
5739  * @combo_box: a #GtkComboBox
5740  *
5741  * Returns the ID of the active row of @combo_box.  This value is taken
5742  * from the active row and the column specified by the #GtkComboBox:id-column
5743  * property of @combo_box (see gtk_combo_box_set_id_column()).
5744  *
5745  * The returned value is an interned string which means that you can
5746  * compare the pointer by value to other interned strings and that you
5747  * must not free it.
5748  *
5749  * If the #GtkComboBox:id-column property of @combo_box is not set, or if
5750  * no row is active, or if the active row has a %NULL ID value, then %NULL
5751  * is returned.
5752  *
5753  * Return value: the ID of the active row, or %NULL
5754  *
5755  * Since: 3.0
5756  **/
5757 const gchar *
5758 gtk_combo_box_get_active_id (GtkComboBox *combo_box)
5759 {
5760   GtkTreeModel *model;
5761   GtkTreeIter iter;
5762   gint column;
5763
5764   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), NULL);
5765
5766   column = combo_box->priv->id_column;
5767
5768   if (column < 0)
5769     return NULL;
5770
5771   model = gtk_combo_box_get_model (combo_box);
5772   g_return_val_if_fail (gtk_tree_model_get_column_type (model, column) ==
5773                         G_TYPE_STRING, NULL);
5774
5775   if (gtk_combo_box_get_active_iter (combo_box, &iter))
5776     {
5777       const gchar *interned;
5778       gchar *id;
5779
5780       gtk_tree_model_get (model, &iter, column, &id, -1);
5781       interned = g_intern_string (id);
5782       g_free (id);
5783
5784       return interned;
5785     }
5786
5787   return NULL;
5788 }
5789
5790 /**
5791  * gtk_combo_box_set_active_id:
5792  * @combo_box: a #GtkComboBox
5793  * @active_id: (allow-none): the ID of the row to select, or %NULL
5794  *
5795  * Changes the active row of @combo_box to the one that has an ID equal to
5796  * @active_id, or unsets the active row if @active_id is %NULL.  Rows having
5797  * a %NULL ID string cannot be made active by this function.
5798  *
5799  * If the #GtkComboBox:id-column property of @combo_box is unset or if no
5800  * row has the given ID then the function does nothing and returns %FALSE.
5801  *
5802  * Returns: %TRUE if a row with a matching ID was found.  If a %NULL
5803  *          @active_id was given to unset the active row, the function
5804  *          always returns %TRUE.
5805  *
5806  * Since: 3.0
5807  **/
5808 gboolean
5809 gtk_combo_box_set_active_id (GtkComboBox *combo_box,
5810                              const gchar *active_id)
5811 {
5812   GtkTreeModel *model;
5813   GtkTreeIter iter;
5814   gboolean match = FALSE;
5815   gint column;
5816
5817   g_return_val_if_fail (GTK_IS_COMBO_BOX (combo_box), FALSE);
5818
5819   if (active_id == NULL)
5820     {
5821       gtk_combo_box_set_active (combo_box, -1);
5822       return TRUE;  /* active row was successfully unset */
5823     }
5824
5825   column = combo_box->priv->id_column;
5826
5827   if (column < 0)
5828     return FALSE;
5829
5830   model = gtk_combo_box_get_model (combo_box);
5831   g_return_val_if_fail (gtk_tree_model_get_column_type (model, column) ==
5832                         G_TYPE_STRING, FALSE);
5833
5834   if (gtk_tree_model_get_iter_first (model, &iter))
5835     do {
5836       gchar *id;
5837
5838       gtk_tree_model_get (model, &iter, column, &id, -1);
5839       if (id != NULL)
5840         match = strcmp (id, active_id) == 0;
5841       g_free (id);
5842
5843       if (match)
5844         {
5845           gtk_combo_box_set_active_iter (combo_box, &iter);
5846           break;
5847         }
5848     } while (gtk_tree_model_iter_next (model, &iter));
5849
5850     return match;
5851 }